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{{Short description|Extraction of valuable minerals or other geological materials from the Earth}}
{{redirect|Underground mining|other uses|Underground soft-rock mining|and|Underground hard-rock mining}}
{{Other uses}}
{{Merge from|Stone industry|discuss=Talk:Mining#Proposed merge of Stone industry into Mining|date=March 2025}}

[[File:Sulphur Mining at Kawah Ijen 3.jpg|upright=1.5|thumb|alt=Person stabbing a yellow mineral block|Mining of [[sulfur]] from a [[Deposition (geology)|deposit]] at the edge of [[Ijen]]'s crater lake, Indonesia]]

'''Mining''' is the [[Resource extraction|extraction]] of valuable geological materials and minerals from the surface of the [[Earth]]. Mining is required to obtain most materials that cannot be grown through [[agriculture|agricultural processes]], or feasibly created [[Chemical synthesis|artificially]] in a [[laboratory]] or factory. [[Ore]]s recovered by mining include [[Metal#Extraction|metals]], [[coal]], [[oil shale]], [[gemstone]]s, [[limestone]], [[chalk mining|chalk]], [[dimension stone]], [[rock salt]], [[potash]], [[gravel]], and [[clay]]. The ore must be a rock or [[mineral]] that contains valuable constituent, can be extracted or mined and sold for profit.<ref>{{Cite web |title=Definition of ORE |url=https://www.merriam-webster.com/dictionary/ore |access-date=2023-02-10 |website=Merriam-Webster |language=en |archive-date=2023-02-10 |archive-url=https://web.archive.org/web/20230210194323/https://www.merriam-webster.com/dictionary/ore |url-status=live }}</ref> Mining in a wider sense includes extraction of any [[non-renewable resource]] such as [[petroleum]], [[natural gas]], or even [[fossil water|water]].

Modern mining processes involve [[prospecting]] for ore bodies, analysis of the profit potential of a proposed mine, extraction of the desired materials, and final [[mine reclamation|reclamation]] or restoration of the land after the mine is closed.<ref>{{Cite book|url=https://archive.org/details/deremetallica50agri|title=De re metallica|last1=Agricola|first1=Georg|last2=Hoover|first2=Herbert|date=1950|publisher=New York, Dover Publications|others=MBLWHOI Library}}</ref> Mining materials are often obtained from ore bodies, [[lode]]s, [[vein (geology)|veins]], [[coal mining|seams]], [[quartz reef mining|reefs]], or [[placer deposit]]s. The exploitation of these deposits for [[raw material]]s is dependent on investment, labor, energy, refining, and transportation cost.

Mining operations can create a negative environmental impact, both during the mining activity and after the mine has closed. Hence, most of the world's nations have passed regulations to decrease the impact; however, the outsized role of mining in generating business for often rural, remote or economically depressed communities means that governments often fail to fully enforce such regulations. [[Mine safety|Work safety]] has long been a concern as well, and where enforced, modern practices have significantly improved safety in mines. Unregulated, poorly regulated or [[illegal mining]], especially in [[developing economies]], frequently contributes to local [[human rights]] violations and [[environmental conflict]]s. Mining can also perpetuate political instability through [[Conflict resource|resource conflicts]].

==History==
===Prehistory===

Since the beginning of civilization, people have used [[Rock (geology)|stone]], [[clay]] and, later, [[metal]]s found close to the Earth's surface. These were used to make early tools and weapons; for example, high quality [[flint]] found in northern [[France]], southern [[England]] and [[Poland]] was used to create [[Flint (tool)|flint tools]].<ref>Hartman, Howard L. ''SME Mining Engineering Handbook'', Society for Mining, Metallurgy, and Exploration Inc, 1992, p. 3.</ref> [[Flint]] mines have been found in [[chalk]] areas where seams of the stone were followed underground by [[Shaft sinking|shafts]] and galleries. The mines at [[Grimes Graves]] and [[Krzemionki]] are especially famous, and like most other flint mines, are [[Neolithic]] in origin (c. 4000–3000 BC). Other hard rocks mined or collected for axes included the [[Greenschist|greenstone]] of the [[Langdale axe industry]] based in the [[English Lake District]].<ref name="KloproggePonceLoomis2020">{{cite book | author1 = J. Theo Kloprogge | author2 = Concepcion P. Ponce | author3 = Tom Loomis | date = 18 November 2020 | title = The Periodic Table: Nature's Building Blocks: An Introduction to the Naturally Occurring Elements, Their Origins and Their Uses | publisher = Elsevier | page =54 | isbn = 978-0-12-821538-8 | url = https://books.google.com/books?id=hGa8DwAAQBAJ}}</ref>
The oldest-known mine on archaeological record is the [[Ngwenya Mine]] in [[Eswatini (Swaziland)]], which [[radiocarbon dating]] shows to be about 43,000 years old. At this site [[Paleolithic]] humans mined [[hematite]] to make the red [[pigment]] [[ochre]].<ref>Swaziland Natural Trust Commission, "Cultural Resources – Malolotja Archaeology, Lion Cavern," Retrieved August 27, 2007, {{cite web|url=http://www.sntc.org.sz/cultural/malarch.asp |title=Swaziland National Trust Commission – Cultural Resources – Malolotja Archaeology, Lion Cavern |access-date=2016-02-05 |url-status=dead |archive-url=https://web.archive.org/web/20160303221001/http://www.sntc.org.sz/cultural/malarch.asp |archive-date=2016-03-03 }}</ref><ref>Peace Parks Foundation, "Major Features: Cultural Importance." Republic of South Africa: Author. Retrieved August 27, 2007, [http://www.peaceparks.org/story.php?mid=168&pid=148] {{Webarchive|url=https://web.archive.org/web/20081207102130/http://www.peaceparks.org/story.php?mid=168&pid=148|date=2008-12-07}}</ref> Mines of a similar age in [[Hungary]] are believed to be sites where [[Neanderthal]]s may have mined flint for weapons and tools.<ref>{{cite web|title = ASA – October 1996: Mining and Religion in Ancient Man|url = http://www2.asa3.org/archive/asa/199610/0067.html|website = www2.asa3.org|access-date = 2015-06-11|archive-date = 2018-10-02|archive-url = https://web.archive.org/web/20181002182555/http://www2.asa3.org/archive/asa/199610/0067.html|url-status = dead}}</ref>

===Ancient Egypt===
[[File:Malachite, Zaire.jpg|250px|thumb|right|Malachite]]
[[Ancient Egypt]]ians mined [[malachite]] at [[Maadi]].<ref>Shaw, I. (2000). ''The Oxford History of Ancient Egypt''. New York: Oxford University Press, pp.&nbsp;57–59.</ref> At first, [[Egyptians]] used the bright green malachite stones for ornamentations and [[pottery]]. Later, between 2613 and 2494 BC, large building projects required expeditions abroad to the area of [[Wadi Maghareh]] in order to secure minerals and other resources not available in Egypt itself.<ref name="Shaw">Shaw, I. (2000). ''The Oxford History of Ancient Egypt''. New York: Oxford University Press, p. 108.</ref> Quarries for [[turquoise]] and [[copper]] were also found at [[Wadi Hammamat]], [[Tura, Egypt|Tura]], [[Aswan]] and various other [[Nubia]]n sites on the [[Sinai Peninsula]] and at [[Timna Valley|Timna]].<ref name="Shaw"/> Quarries for [[gypsum]] were found at the Umm el-Sawwan site; gypsum was used to make funerary items for private tombs. Other minerals mined in Egypt from the Old Kingdom (2649-2134 BC) until the Roman Period (30 BC-AD 395) including [[granite]], [[sandstone]], [[limestone]], [[basalt]], [[travertine]], [[gneiss]], [[galena]], and [[amethyst]].<ref>{{Cite journal |last=Shaw |first=Ian |date=March 1994 |title=Pharaonic quarrying and mining: settlement and procurement in Egypt's marginal regions |url=https://www.cambridge.org/core/journals/antiquity/article/abs/pharaonic-quarrying-and-mining-settlement-and-procurement-in-egypts-marginal-regions/B141EC0C2080C7FFEE5D6D8E995EDC08 |journal=Antiquity |language=en |volume=68 |issue=258 |pages=108–119 |doi=10.1017/S0003598X0004624X |s2cid=127791320 |issn=0003-598X|url-access=subscription }}</ref>

[[Mining in Egypt]] occurred in the earliest dynasties. The [[Nubia#Kerma|gold mines of Nubia]] were among the largest and most extensive of any in Ancient Egypt. These mines are described by the [[Greeks|Greek]] author [[Diodorus Siculus]], who mentions [[fire-setting]] as one method used to break down the hard rock holding the [[gold]]. One of the complexes is shown in one of the earliest known mining maps.<ref>{{cite journal| url=https://doi.org/10.1007/s00531-019-01811-w| doi=10.1007/s00531-019-01811-w| title=Al Fawakhir Gold mine as a Geosite, Eastern Desert, Egypt| year=2020| last1=Abdelmaksoud| first1=Kholoud M.| journal=International Journal of Earth Sciences| volume=109| issue=1| pages=197–199| bibcode=2020IJEaS.109..197A| s2cid=210715910| url-access=subscription}}</ref> The miners crushed the ore and ground it to a fine powder before washing the powder for the gold dust known as the dry and wet attachment processes.<ref>{{Cite journal |last=Neesse |first=Thomas |date=April 2014 |title=Selective attachment processes in ancient gold ore beneficiation |journal=Minerals Engineering |language=en |volume=58 |pages=52–63 |doi=10.1016/j.mineng.2014.01.009|bibcode=2014MiEng..58...52N |doi-access=free }}</ref>

===Ancient Greece and Rome===
{{Further|Mining in Roman Britain}}
[[File:Dolaucothimap4.jpg|thumb|upright=1.35|Ancient Roman development of the [[Dolaucothi Gold Mines]], Wales]]
Mining in Europe has a very long history. Examples include the silver mines of [[Laurium]], which helped support the Greek [[City-state|city state]] of [[Athens]]. Although they had over 20,000 [[slaves]] working them, their technology was essentially identical to their [[Bronze Age]] predecessors.<ref>{{cite web|title = Mining greece ancient mines|url = http://www.miningreece.com/mining-greece/mining-history/ancient-mines/|website = www.miningreece.com|access-date = 2015-06-11|date = 2014-12-10|archive-date = 2015-06-12|archive-url = https://web.archive.org/web/20150612161354/http://www.miningreece.com/mining-greece/mining-history/ancient-mines/|url-status = live}}</ref> At other mines, such as on the island of [[Thasos|Thassos]], marble was quarried by the [[Paros|Parians]] after they arrived in the 7th century BC.<ref>{{cite web|title = Mining Greece Ancient Quarries in Thassos|url = http://www.miningreece.com/mining-greece/ancient-quarries-in-thassos/|website = www.miningreece.com|access-date = 2015-06-11|date = 2014-12-10|archive-date = 2015-06-12|archive-url = https://web.archive.org/web/20150612161350/http://www.miningreece.com/mining-greece/ancient-quarries-in-thassos/|url-status = live}}</ref> The marble was shipped away and was later found by [[archaeologists]] to have been used in buildings including the tomb of Amphipolis. [[Philip II of Macedon]], the father of [[Alexander the Great]], captured the gold mines of Mount Pangeo in 357 BC to fund his military campaigns.<ref>{{cite web|title = Mining Greece the Goldmines of Alexander the Great|url = http://www.miningreece.com/mining-greece/mining-history/the-goldmines-of-alexander-the-great/|website = www.miningreece.com|access-date = 2015-06-11|date = 2014-12-10}}</ref> He also captured gold mines in [[Eastern Macedonia and Thrace|Thrace]] for minting coinage, eventually producing 26 [[ton]]s per year.

However, it was the [[Ancient Rome|Romans]] who developed large-scale mining methods, especially the use of large volumes of water brought to the minehead by numerous [[aqueduct (watercourse)|aqueducts]]. The water was used for a variety of purposes, including removing overburden and rock debris, called [[hydraulic mining]], as well as washing [[comminution|comminuted]], or crushed, ores and driving simple machinery.

The Romans used hydraulic mining methods on a large scale to prospect for the [[vein (geology)|veins]] of ore, especially using a now-obsolete form of mining known as [[hushing]]. They built numerous [[aqueduct (watercourse)|aqueducts]] to supply water to the minehead, where the water was stored in large [[reservoirs]] and tanks. When a full tank was opened, the flood of water [[sluice]]d away the [[overburden]] to expose the [[bedrock]] underneath and any gold-bearing veins. The rock was then worked by [[fire-setting]] to heat the rock, which would be quenched with a stream of water. The resulting [[thermal shock]] cracked the rock, enabling it to be removed by further streams of water from the overhead tanks. The Roman miners used similar methods to work [[cassiterite]] deposits in [[Cornwall]] and [[lead]] ore in the [[Pennines]].

Sluicing methods were developed by the Romans in [[Spain]] in 25 AD to exploit large [[alluvial]] gold deposits, the largest site being at [[Las Medulas]], where seven long aqueducts tapped local rivers and sluiced the deposits. The Romans also exploited the silver present in the [[Galena|argentiferous galena]] in the [[mines of Cartagena]] (''[[Cartago Nova]]''), [[Linares, Jaén|Linares]] (''Castulo''), [[Plasenzuela]] and [[Azuaga]], among many others.<ref>{{Cite book|title=Minerales y Minas de España. Vol. II. Sulfuros y sulfosales|last=Calvo|first=Miguel|publisher=Museo de Ciencias Naturales de Alava|year=2003|isbn=84-7821-543-3|location=Vitoria, Spain|pages=205–335}}</ref> [[Spain]] was one of the most important mining regions, but all regions of the [[Roman Empire]] were exploited. In [[Great Britain]] the natives had mined minerals for [[millennia]],<ref>{{cite web|url=http://news.independent.co.uk/uk/this_britain/article2169254.ece |title=The Independent, 20 Jan. 2007: ''The end of a Celtic tradition: the last gold miner in Wales'' |publisher=News.independent.co.uk |date=2007-01-20 |access-date=2013-06-22 |url-status=dead |archive-url=https://web.archive.org/web/20080706035317/http://news.independent.co.uk/uk/this_britain/article2169254.ece |archive-date=July 6, 2008 }}</ref> but after the [[Roman conquest of Britain|Roman conquest]], the scale of the operations increased dramatically, as the Romans needed [[Britannia]]'s resources, especially [[gold]], [[silver]], [[tin]], and [[lead]].

Roman techniques were not limited to surface mining. They followed the ore veins underground once opencast mining was no longer feasible. At [[Dolaucothi]] they [[stoping|stoped]] out the veins and drove [[adit]]s through bare rock to drain the stopes. The same adits were also used to ventilate the workings, especially important when [[fire-setting]] was used. At other parts of the site, they penetrated the [[water table]] and dewatered the mines using several kinds of machines, especially [[reverse overshot water-wheel]]s. These were used extensively in the [[copper]] mines at [[Rio Tinto (river)|Rio Tinto]] in Spain, where one sequence comprised 16 such wheels arranged in pairs, and lifting water about {{convert|24|m|ft}}. They were worked as treadmills with miners standing on the top slats. Many examples of such devices have been found in old Roman mines and some examples are now preserved in the [[British Museum]] and the [[National Museum of Wales]].<ref>{{cite web|url=http://romans-in-britain.org.uk/|archive-url=https://web.archive.org/web/20100720073131/http://www.romans-in-britain.org.uk/raw_mining.htm|url-status=dead|title=Web Hosting, Reseller Hosting & Domain Names from Heart Internet|archive-date=July 20, 2010|website=romans-in-britain.org.uk}}</ref>

===Medieval Europe===
{{main|Mining and metallurgy in medieval Europe}}
[[File:Georgius Agricola.jpg|thumb|upright|Agricola, author of ''[[De Re Metallica]]'']]
[[File:Gallery medieval silver mine Germany southern Black Forest 12th century.jpg|thumb|upright|Gallery, 12th to 13th century, Germany]]
Mining as an industry underwent dramatic changes in [[Middle Ages|medieval Europe]]. The mining industry in the early [[Middle Ages]] was mainly focused on the extraction of [[copper]] and [[iron]]. Other [[precious metal]]s were also used, mainly for gilding or coinage. Initially, many metals were obtained through [[open-pit mining]], and [[ore]] was primarily extracted from shallow depths, rather than through deep mine shafts. Around the [[14th century]], the growing use of [[weapons]], [[armour]], [[stirrup]]s, and [[horseshoe]]s greatly increased the demand for iron. Medieval [[knights]], for example, were often laden with up to {{convert|100|lb}} of plate or [[Chain mail|chain link armour]] in addition to [[sword]]s, [[lances]] and other weapons.<ref>A culture of Improvement. Robert Friedel. MIT Press. 2007. p. 81</ref> The overwhelming dependency on iron for military purposes spurred iron production and extraction processes.

The silver crisis of 1465 occurred when all mines had reached depths at which the shafts could no longer be pumped dry with the available technology.<ref>{{cite web |url=http://mygeologypage.ucdavis.edu/cowen/~GEL115/115CH7.html |title=Chapter 7: Medieval Silver and Gold |publisher=Mygeologypage.ucdavis.edu |access-date=2013-06-22 |archive-url=https://web.archive.org/web/20130714062613/http://mygeologypage.ucdavis.edu/cowen/~GEL115/115ch7.html |archive-date=2013-07-14 |url-status=dead }}</ref> Although an increased use of [[banknote]]s, credit and [[copper]] [[coins]] during this period did decrease the value of, and dependence on, [[precious metals]], [[gold]] and [[silver]] still remained vital to the story of medieval mining.

Due to differences in the social structure of society, the increasing extraction of mineral deposits spread from [[central Europe]] to England in the mid-sixteenth century. On the continent, mineral deposits belonged to the crown, and this regalian right was stoutly maintained. But in England, royal mining rights were restricted to [[gold]] and [[silver]] (of which England had virtually no deposits) by a judicial decision of 1568 and a law in 1688. [[England]] had [[iron]], [[zinc]], [[copper]], [[lead]], and [[tin]] ores. [[Landlords]] who owned the base metals and coal under their estates then had a strong inducement to extract these metals or to lease the deposits and collect royalties from mine operators. English, [[Germany|German]], and [[Netherlands|Dutch]] [[Capital (economics)|capital]] combined to finance extraction and [[refining]]. Hundreds of German [[technicians]] and skilled workers were brought over; in 1642 a colony of 4,000 foreigners was mining and smelting copper at [[Keswick, Cumbria|Keswick]] in the northwestern mountains.<ref>Heaton Herbert (1948) ''Economic History of Europe.'' A Harper International Edition. Fifth printing. February 1968. p. 316</ref>

Use of water power in the form of [[water mill]]s was extensive. The water mills were employed in crushing ore, raising ore from shafts, and ventilating galleries by powering giant [[bellows]]. [[gun powder|Black powder]] was first used in mining in [[Banská Štiavnica|Selmecbánya]], [[Kingdom of Hungary]] (now [[Banská Štiavnica]], Slovakia) in 1627.<ref>{{Cite journal | doi=10.1007/s00334-007-0096-8|title = Analysis of the fuel wood used in Late Bronze Age and Early Iron Age copper mining sites of the Schwaz and Brixlegg area (Tyrol, Austria)| journal=Vegetation History and Archaeobotany| volume=17| issue=2| pages=211–21|year = 2008|last1 = Heiss|first1 = Andreas G.| last2=Oeggl| first2=Klaus| bibcode=2008VegHA..17..211H | citeseerx=10.1.1.156.1683|s2cid = 15636432}}</ref> Black powder allowed blasting of rock and earth to loosen and reveal ore veins. Blasting was much faster than [[fire-setting]] and allowed the mining of previously impenetrable metals and ores.<ref>The use of Firesetting in the Granite Quarries of South India Paul T. Craddock The Bulletin of the Peak District Mines Historical Society, Vol. 13 Number 1. 1996</ref> In 1762, one of the world's first mining academies was established in the same town there.

The widespread adoption of agricultural innovations such as the iron [[plowshare]], as well as the growing use of metal as a building material, was also a driving force in the tremendous growth of the iron industry during this period. Inventions like the [[arrastra]] were often used by the Spanish to pulverize ore after being mined. This device was powered by animals and used the same principles used for grain [[threshing]].<ref>"The Spanish Tradition in Gold and Silver Mining." Otis E. Young ''[[Arizona and the West]]'', Vol. 7, No. 4 (Winter, 1965), pp. 299–314 (''Journal of the Southwest'') {{JSTOR|40167137}}.</ref>

Much of the knowledge of medieval mining techniques comes from books such as [[Biringuccio]]'s ''[[De la pirotechnia]]'' and probably most importantly from [[Georg Agricola]]'s ''[[De re metallica]]'' (1556). These books detail many different mining methods used in German and Saxon mines. A prime issue in medieval mines, which [[Georgius Agricola|Agricola]] explains in detail, was the removal of water from mining shafts. As miners dug deeper to access new veins, flooding became a very real obstacle. The mining industry became dramatically more efficient and prosperous with the invention of mechanically- and animal-driven pumps.

===Africa===
[[Iron metallurgy in Africa]] dates back over four thousand years. Gold became an important commodity for Africa during the [[trans-Saharan gold trade]] from the 7th century to the 14th century. Gold was often traded to Mediterranean economies that demanded gold and could supply [[salt]], even though much of Africa was abundant with salt due to the mines and resources in the [[Sahara desert]]. The trading of gold for salt was mostly used to promote trade between the different economies.<ref>{{cite web |url=https://www.metmuseum.org/toah/hd/gold/hd_gold.htm |title=The Trans-Saharan Gold Trade (7th–14th Century) |publisher=The Metropolitan Museum |date=October 2000 |access-date=7 July 2022 |archive-date=25 June 2020 |archive-url=https://web.archive.org/web/20200625205507/https://www.metmuseum.org/toah/hd/gold/hd_gold.htm |url-status=live }}</ref> Since the [[Great Trek]] in the 19th century, after, gold and diamond mining in [[Mining industry of South Africa|Southern Africa]] has had major political and economic impacts. The [[Democratic Republic of Congo]] is the largest producer of diamonds in Africa, with an estimated 12 million carats in 2019. Other types of mining reserves in Africa include [[cobalt]], [[bauxite]], [[iron ore]], coal, and [[copper]].<ref>{{cite web|author=Published by M. Garside |url=https://www.statista.com/topics/7205/mining-industry-in-africa/#topicHeader__wrapper |title=Mining industry in Africa - statistics & facts |publisher=Statista |date=2021-10-20 |accessdate=2022-03-19}}</ref>

=== Oceania ===
Gold and coal mining started in Australia and New Zealand in the 19th century. [[Nickel mining in New Caledonia|Nickel]] has become important in the economy of [[New Caledonia]].{{Citation needed|date=March 2024}}

In [[Fiji]], in 1934, the Emperor Gold Mining Company Ltd. established operations at [[Vatukoula]], followed in 1935 by the Loloma Gold Mines, N.L., and then by Fiji Mines Development Ltd. (aka Dolphin Mines Ltd.). These developments ushered in a "mining boom", with gold production rising more than a hundred-fold, from 931.4 oz in 1934 to 107,788.5 oz in 1939, an order of magnitude then comparable to the combined output of New Zealand and Australia's eastern states.<ref>Fiji through the Prism of Geology and Mines Inspection. Chapter 5 in: White F. (2020). Miner with a Heart of Gold: biography of a mineral science and engineering educator. Friesen Press, Victoria. ISBN 978-1-5255-7765-9 (Hardcover) 978-1-5255-7766-6 (Paperback) 978-1-5255-7767-3 (eBook)</ref>

===Americas===
[[File:Lead mining Barber 1865p321cropped.jpg|thumb|[[Lead]] mining in the upper [[Mississippi River]] region of the U.S., 1865]]
During prehistoric times, early Americans mined large amounts of [[copper]] along [[Lake Superior]]'s [[Keweenaw Peninsula]] and in nearby [[Isle Royale]]; metallic copper was still present near the surface in colonial times.<ref name="Lankton91">Lankton, L. (1991). ''Cradle to Grave: Life, Work, and Death at the Lake Superior Copper Mines''. New York: Oxford University Press, pp. 5–6.</ref><ref name="west70">West, G.A. (1970). ''Copper: its mining and use by the aborigines of the Lake Superior Region''. Westport, Conn: Greenwood Press.</ref><ref name="Ricard32">Ricard, T. A. (1932), ''A History of American Mining'', McGraw-Hill Book Company.</ref> Indigenous peoples used Lake Superior copper from at least 5,000 years ago;<ref name="Lankton91"/> copper tools, arrowheads, and other [[Cultural artifact|artifacts]] that were part of an extensive native trade-network have been discovered. In addition, [[obsidian]], [[flint]], and other minerals were mined, worked, and traded.<ref name="west70"/> Early French explorers who encountered the sites{{clarify|date= December 2013}}<!--Which sites? All, or only the copper mines? If all, then the following word "metals" needs to be changed to "minerals". If only the copper mines, then "the sites" should be changed to "the copper mines".--> made no use of the metals due to the difficulties of transporting them,<ref name="west70"/> but the copper was eventually{{when|date=April 2021}} traded throughout the continent along major river routes.{{Citation needed|date= January 2021}} [[File:TamarackMiners CopperCountryMI sepia.jpg|thumb|left|[[Miners]] at the [[Tamarack mine|Tamarack Mine]] in [[Copper Country]], Michigan, U.S., in 1905]]

[[File:Mining factory - DPLA - cc85a73449447a67878caac4f19a23d2.jpg|left|thumb|Mining factory, {{Circa}} 1880–1885. Photographs of the American West, Boston Public Library]]
In the early colonial history of the Americas, "native gold and silver was quickly expropriated and sent back to Spain in fleets of gold- and silver-laden galleons",<ref>Vaden, H.E. & Prevost. G. (2002). ''Politics of Latin America: The Power Game''. New York: Oxford University Press, p. 34.</ref> the gold and silver originating mostly from mines in Central and South America. [[Turquoise]] dated at 700 AD was mined in [[pre-Columbian]] America; in the Cerillos Mining District in [[New Mexico]], an estimate of "about 15,000 tons of rock had been removed from Mt. Chalchihuitl using [[stone tool]]s before 1700."<ref>Maynard, S.R., Lisenbee, A.L. & Rogers, J. (2002). Preliminary Geologic Map of the Picture Rock 7.5 – Minute Quadrangle Santa Fe County, Central New Mexico. New Mexico Bureau of Geology and Mineral Resources, Open-File Report DM-49.</ref><ref>The Cerrillos Hills Park Coalition, (2000). Cerrillos Hills Historic Park Vision Statement. Public documents: Author. Retrieved August 27, 2007, [http://www.cerrilloshills.org/Coalition/document.html]. {{webarchive|url=https://web.archive.org/web/20120801011021/http://www.cerrilloshills.org/Coalition/document.html|date=August 1, 2012}}</ref>

In 1727 Louis Denys (Denis) (1675–1741), sieur de La Ronde – brother of [[Simon-Pierre Denys de Bonaventure]] and the son-in-law of [[René-Louis Chartier de Lotbinière|René Chartier]] – took command of [[La Pointe, Wisconsin|Fort La Pointe]] at [[Chequamegon Bay]]; where natives informed him of an island of copper. La Ronde obtained permission from the French crown to operate mines in 1733, becoming "the first practical miner on Lake Superior"; seven years later, mining was halted by an outbreak between [[Sioux]] and [[Chippewa]] tribes.<ref>[https://books.google.com/books?id=jLTpCAAAQBAJ&q=la+ronde ''The WPA Guide to Wisconsin: The Badger State''], Federal Writers' Project, Trinity University Press, Wisconsin, USA, 2013, p. 451. Retrieved November 15, 2018.</ref>

[[Mining in the United States]] became widespread in the 19th century, and the United States Congress passed the [[General Mining Act of 1872]] to encourage mining of federal lands.<ref>McClure R, Schneider A. [http://www.seattlepi.com/specials/mining/26875_mine11.shtml The General Mining Act of 1872 has left a legacy of riches and ruin] {{Webarchive|url=https://web.archive.org/web/20101205011349/http://www.seattlepi.com/specials/mining/26875_mine11.shtml |date=2010-12-05 }}. ''Seattle PI''.</ref> As with the [[California Gold Rush]] in the mid-19th century, mining for minerals and precious metals, along with [[ranching]], became a driving factor in the U.S. [[Westward Expansion]] to the Pacific coast. With the exploration of the West, mining camps sprang up and "expressed a distinctive spirit, an enduring legacy to the new nation"; Gold Rushers would experience the same problems as the Land Rushers of the transient West that preceded them.<ref>Boorstin, D.J. (1965). ''The Americans: The National Experience''. New York: Vintage Books, pp. 78–81.</ref> Aided by railroads, many people traveled West for work opportunities in mining. Western cities such as [[Denver, Colorado|Denver]] and [[Sacramento, California|Sacramento]] originated as mining towns.<ref>{{cite web |title=Mining in the West Development Articles and Essays Meeting of Frontiers Digital Collections Library of Congress |url=https://www.loc.gov/collections/meeting-of-frontiers/articles-and-essays/development/mining-in-the-west/ |website=Library of Congress, Washington, D.C. 20540 USA |access-date=27 September 2022}}</ref>

When new areas were explored, it was usually the gold ([[placer gold|placer]] and then [[lode gold|lode]]) and then silver that were taken into possession and extracted first. Other metals would often wait for railroads or canals, as coarse gold dust and nuggets do not require smelting and are easy to identify and transport.<ref name="Ricard32"/>

===Modernity===
[[File:View showing miners’ clothes.jpg|thumb|View showing miners' clothes suspended by pulleys, also wash basins and ventilation system, Kirkland Lake, Ontario, 1936]]
In the early 20th century, the gold and silver rush to the western United States also stimulated mining for coal as well as [[base metal]]s such as copper, lead, and iron. Areas in modern Montana, Utah, Arizona, and later Alaska became predominant suppliers of copper to the world, which was increasingly demanding copper for electrical and household goods.<ref name=miller>Miller C. (2013). ''Atlas of US and Canadian Environmental History'', [https://books.google.com/books?id=QD0LTYaBjKEC&pg=PA65 p. 64] {{Webarchive|url=https://web.archive.org/web/20230928225836/https://books.google.com/books?id=QD0LTYaBjKEC&pg=PA65 |date=2023-09-28 }}. ''Taylor & Francis''.</ref> Canada's mining industry grew more slowly than did the United States due to limitations in transportation, capital, and U.S. competition; Ontario was the major producer of the early 20th century with nickel, copper, and gold.<ref name=miller/>

Meanwhile, Australia experienced the [[Australian gold rushes]] and by the 1850s was producing 40% of the world's gold, followed by the establishment of large mines such as the [[Mount Morgan Mine]], which ran for nearly a hundred years, [[Broken Hill ore deposit]] (one of the largest zinc-lead ore deposits), and the iron ore mines at [[Iron Knob]]. After declines in production, another boom in mining occurred in the 1960s. In the early 21st century, Australia remains a major world mineral producer.<ref>[http://www.australianminesatlas.gov.au/history/index.html#1900 History of Australia's Minerals Industry] {{Webarchive|url=https://web.archive.org/web/20170711145023/http://www.australianminesatlas.gov.au/history/index.html#1900 |date=2017-07-11 }}. Australian Atlas of Minerals Processing, Mines, and & Processing Centres.</ref>

As the 21st century begins, a globalized [[#Industry|mining industry]] of large multinational corporations has arisen. [[Peak minerals]] and [[#Environmental effects|environmental impacts]] have also become a concern. Different elements, particularly [[rare-earth mineral]]s, have begun to increase in demand as a result of new technologies.<ref name="Geosciences LibreTexts-2017"/>

In 2023, 8.5 billion metric tons of coal were extracted from the Earth's crust. However, as the global economy transitions away from fossil fuels and toward a more sustainable future, the demand for metals is set to skyrocket. Between 2022 and 2050, an estimated 7 billion metric tons of metals will need to be extracted. Steel will account for the largest portion of this total at 5 billion tons, followed by aluminum at 950 million tons, copper at 650 million tons, graphite at 170 million tons, nickel at 100 million tons, and other metals. Notably, the energy expenditure required to extract these metals will soon surpass that of coal mining, highlighting the growing importance of sustainable metal extraction practices.<ref>{{cite web | last=Rathi | first=Akshat | title=Net Zero Needs More Metals, But Less Extraction From the Earth | website=Bloomberg.com | date=2024-09-10 | url=https://www.bloomberg.com/news/articles/2024-09-10/net-zero-needs-more-metals-but-less-extraction-from-the-earth | access-date=2024-09-15}}</ref>

== Mine development and life cycle ==
{{More citations needed section|date=March 2024}}
[[File:Cut and fill schematic.png|thumb|upright=1.5|Schematic of a [[Underground mining (hard rock)|cut and fill mining operation in hard rock]]]]
The process of mining from discovery of an ore body through extraction of minerals and finally to returning the land to its natural state consists of several distinct steps. The first is discovery of the ore body, which is carried out through [[prospecting]] or [[Mineral exploration|exploration]] to find and then define the extent, location and value of the ore body. This leads to a mathematical [[mineral resource classification|resource estimation]] to estimate the size and [[ore grade|grade]] of the deposit.<ref>Martins-Ferreira, M. A. C., Campos, J. E. G., & Pires, A. C. B. (2017). "Near-mine exploration via soil geochemistry multivariate analysis at the Almas gold province, Central Brazil: A study case." ''Journal of Geochemical Exploration'', 173, 52–63.</ref>

This estimation is used to conduct a pre-feasibility study to determine the theoretical economics of the ore deposit. This identifies, early on, whether further investment in estimation and engineering studies is warranted and identifies key risks and areas for further work. The next step is to conduct a [[mining feasibility study|feasibility study]] to evaluate the financial viability, the technical and financial risks, and the robustness of the project.<ref>O'Hara, T. Alan and Stanley C. Suboleski, SME: ''Mining Engineering Handbook'', 2nd ed., Vol. 1, 1992, "Costs and Cost Estimation", pp. 405–408, {{ISBN|0-87335-100-2}}</ref>

This is when the mining company makes the decision whether to develop the mine or to walk away from the project. This includes mine planning to evaluate the economically recoverable portion of the deposit, the [[metallurgy]] and ore recoverability, marketability and payability of the ore concentrates, engineering concerns, milling and infrastructure costs, finance and equity requirements, and an analysis of the proposed mine from the initial excavation all the way through to reclamation. The proportion of a deposit that is economically recoverable is dependent on the [[enrichment factor]] of the ore in the area.{{citation needed|date=December 2024}}

To gain access to the mineral deposit within an area it is often necessary to mine through or remove [[Overburden|waste material]] which is not of immediate interest to the miner. The total movement of ore and waste constitutes the mining process. Often more waste than ore is mined during the life of a mine, depending on the nature and location of the ore body. Waste removal and placement is a major cost to the mining operator, so a detailed characterization of the waste material forms an essential part of the geological exploration program for a mining operation.{{citation needed|date=December 2024}}

Once the analysis determines a given ore body is worth recovering, development begins to create access to the ore body. The mine buildings and processing plants are built, and any necessary equipment is obtained. The operation of the mine to recover the ore begins and continues as long as the company operating the mine finds it economical to do so. Once all the ore that the mine can produce profitably is recovered, [[Land rehabilitation|reclamation]] can begin, to make the land used by the mine suitable for future use.<ref>{{Cite web |title=Reading: Mining {{!}} Geology |url=https://courses.lumenlearning.com/geo/chapter/reading-mining/ |access-date=2025-03-05 |website=courses.lumenlearning.com}}</ref>

Technical and economic challenges notwithstanding, successful mine development must also address human factors. Working conditions are paramount to success, especially with regard to exposures to dusts, radiation, noise, explosives hazards, and vibration, as well as illumination standards. Mining today increasingly must address environmental and community impacts, including psychological and sociological dimensions. Thus, mining educator [[Frank T. M. White]] (1909–1971), broadened the focus to the "total environment of mining", including reference to community development around mining, and how mining is portrayed to an urban society, which depends on the industry, although seemingly unaware of this dependency. He stated, "[I]n the past, mining engineers have not been called upon to study the psychological, sociological and personal problems of their own industry – aspects that nowadays are assuming tremendous importance. The mining engineer must rapidly expand his knowledge and his influence into these newer fields."<ref>McGill University. Sunset of a Transformational Career. Chapter 16 in: White F. Miner with a Heart of Gold: biography of a mineral science and engineering educator. Friesen Press, Victoria. 2020. ISBN 978-1-5255-7765-9 (Hardcover) 978-1-5255-7766-6 (Paperback) 978-1-5255-7767-3 (eBook)</ref>

== Techniques ==
[[File:SL500 01.jpg|thumb|Underground [[longwall mining]]]]
Mining techniques can be divided into two common [[Earthworks (engineering)|excavation]] types: [[surface mining]] and [[#Underground mining|sub-surface (underground) mining]]. Today, surface mining is much more common, and produces, for example, 85% of minerals (excluding petroleum and natural gas) in the United States, including 98% of metallic ores.<ref>Hartmann HL. ''Introductory Mining Engineering'', p. 11. [http://media.wiley.com/product_data/excerpt/11/04713485/0471348511.pdf First chapter] {{Webarchive|url=https://web.archive.org/web/20160415175613/http://media.wiley.com/product_data/excerpt/11/04713485/0471348511.pdf |date=2016-04-15 }}.</ref>

Targets are divided into two general categories of materials: ''placer deposits'', consisting of valuable minerals contained within river gravels, beach sands, and other [[alluvium|unconsolidated materials]]; and ''lode deposits'', where valuable minerals are found in veins, in layers, or in mineral grains generally distributed throughout a mass of actual rock. Both types of ore deposit, placer or lode, are mined by both surface and underground methods.{{Citation needed|date=January 2021}}

Some mining, including much of the rare earth elements and [[uranium mining]], is done by less-common methods, such as [[in-situ leach]]ing: this technique involves digging neither at the surface nor underground. The extraction of target minerals by this technique requires that they be soluble, e.g., [[potash]], [[potassium chloride]], [[sodium chloride]], [[sodium sulfate]], which dissolve in water. Some minerals, such as copper minerals and [[uranium oxide]], require acid or carbonate solutions to dissolve.<ref>{{cite web |url=http://world-nuclear.org/info/inf27.html |title=In Situ Leach Mining (ISL) of Uranium |publisher=World-nuclear.org |access-date=2013-06-22 |archive-url=https://web.archive.org/web/20100817042715/http://www.world-nuclear.org/info/inf27.html |archive-date=2010-08-17 |url-status=dead }}</ref>

'''<big>Explosives in Mining</big>'''

Explosives have been used in [[surface mining]] and [[Underground hard-rock mining|sub-surface mining]] to blast out rock and ore intended for processing. The most common explosive used in mining is [[ammonium nitrate]].<ref name="Bajpayee-2004">{{Cite journal |last1=Bajpayee |first1=T.S. |last2=Rehak |first2=T.R. |last3=Mowrey |first3=G.L. |last4=Ingram |first4=D.K. |date=January 2004 |title=Blasting injuries in surface mining with emphasis on flyrock and blast area security |url=http://dx.doi.org/10.1016/j.jsr.2003.07.003 |journal=Journal of Safety Research |volume=35 |issue=1 |pages=47–57 |doi=10.1016/j.jsr.2003.07.003 |pmid=14992846 |issn=0022-4375|url-access=subscription }}</ref> Between 1870 and 1920, in Queensland Australia, an increase in mining accidents lead to more safety measures surrounding the use of explosives for mining.<ref>{{Cite journal |last=Wegner |first=Jan Helen |date=2010-06-22 |title=BLASTING OUT: EXPLOSIVES PRACTICES IN QUEENSLAND METALLIFEROUS MINES, 1870-1920: Blasting out |url=https://onlinelibrary.wiley.com/doi/10.1111/j.1467-8446.2010.00301.x |journal=Australian Economic History Review |language=en |volume=50 |issue=2 |pages=193–208 |doi=10.1111/j.1467-8446.2010.00301.x |access-date=2023-04-03 |archive-date=2023-02-21 |archive-url=https://web.archive.org/web/20230221022152/https://onlinelibrary.wiley.com/doi/10.1111/j.1467-8446.2010.00301.x |url-status=live |url-access=subscription }}</ref>  In the United States of America, between 1990 and 1999, about 22.3 billion kilograms of explosives were used in mining quarrying and other industries; Moreover "[[coal mining]] used 66.4%, nonmetal mining and quarrying 13.5%, metal mining 10.4%, [[construction]] 7.1%, and all other users 2.6%".<ref name="Bajpayee-2004" />

=== Artisanal ===
{{Excerpt|Artisanal mining}}

=== Surface ===
{{main|Surface mining}}
[[Surface mining]] is done by removing surface vegetation, dirt, and bedrock to reach buried ore deposits. Techniques of surface mining include: [[open-pit mining]], which is the recovery of materials from an open pit in the ground; [[quarry]]ing, identical to open-pit mining except that it refers to sand, stone and clay; [[strip mining]], which consists of stripping surface layers off to reveal ore underneath; and [[Mountaintop removal mining|mountaintop removal]], commonly associated with coal mining, which involves taking the top of a mountain off to reach ore deposits at depth. Most placer deposits, because they are shallowly buried, are mined by surface methods. Finally, [[landfill mining]] involves sites where [[landfill]]s are excavated and processed.<ref>[http://www.enviroalternatives.com/landfill.html Landfill Mining] {{Webarchive|url=https://web.archive.org/web/20170523045629/http://www.enviroalternatives.com/landfill.html |date=2017-05-23 }} Landfill Mining, Preserving Resources through Integrated Sustainable Management of Waste, Technical Brief from the World Resource Foundation</ref> Landfill mining has been thought of as a long-term solution to [[methane emissions]] and local pollution.<ref>{{Cite journal|date=2012-03-01|title=Landfill mining: A critical review of two decades of research|journal=Waste Management|volume=32|issue=3|pages=513–20|doi=10.1016/j.wasman.2011.10.015|pmid=22083108|issn=0956-053X|last1=Krook|first1=Joakim|last2=Svensson|first2=Niclas|last3=Eklund|first3=Mats|bibcode=2012WaMan..32..513K }}</ref>

{{wide image|Tagebau_Garzweiler_Panorama_2005.jpg|1000px|[[Garzweiler surface mine]], [[Germany]]}}

=== High wall ===
[[File:Mega HIghwall Mining ADDCAR 16.jpg|thumb|Coalburg Seam highwall mining at ADDCAR 16 Logan County WV]]
High wall mining, which evolved from auger mining, is another form of surface mining. In high wall mining, the remaining part of a coal seam previously exploited by other surface-mining techniques has too much overburden to be removed but can still be profitably exploited from the side of the artificial cliff made by previous mining.<ref>{{Citation|url=https://oilprice.com/Energy/Coal/Coal-Mining-And-The-Highwall-Method.html|title=Coal Mining and the Highwall Method|last1=Drum|first1=The Oil|date=November 26, 2010|publisher=A Media Solutions|access-date=September 6, 2021|archive-date=September 6, 2021|archive-url=https://web.archive.org/web/20210906001207/https://oilprice.com/Energy/Coal/Coal-Mining-And-The-Highwall-Method.html|url-status=live}}</ref> A typical cycle alternates sumping, which undercuts the seam, and shearing, which raises and lowers the cutter-head boom to cut the entire height of the coal seam. As the coal recovery cycle continues, the cutter-head is progressively launched further into the coal seam. High wall mining can produce thousands of tons of coal in contour-strip operations with narrow benches, previously mined areas, trench mine applications and steep-dip seams.{{Citation needed|date=January 2021}}
[[File:Myslowice kopalnia Myslowice 07.jpg|thumb|upright|[[Mysłowice]] coal mine shaft tower, [[Upper Silesian Coal Basin]]]]

=== Underground mining ===
{{anchor|Underground Mining}}
{{main|Underground mining (hard rock)|Underground mining (soft rock)}}
[[File:Kilianstollen Zug.jpg|thumb|[[Mantrip]] used for transporting miners within an underground mine]]
[[File:Caterpillar Highwall Mine HW300.jpg|thumb|Caterpillar Highwall Miner HW300 – Technology Bridging Underground and Open Pit Mining]]
Sub-surface mining consists of digging tunnels or shafts into the earth to reach buried ore deposits. Ore, for processing, and waste rock, for disposal, are brought to the surface through the tunnels and shafts. Sub-surface mining can be classified by the type of access shafts used, and the extraction method or the technique used to reach the mineral deposit. [[Drift mining]] uses horizontal access tunnels, [[slope mining]] uses diagonally sloping access shafts, and [[shaft mining]] uses vertical access shafts. Mining in [[Underground mining (hard rock)|hard]] and [[Underground mining (soft rock)|soft]] rock formations requires different techniques.<ref>{{Cite conference |last=Harraz |first=Hassan Z. |date=2010 |title=Underground mining Methods |url=http://rgdoi.net/10.13140/RG.2.1.2881.1124 |doi=10.13140/RG.2.1.2881.1124}}</ref>

Other methods include [[shrinkage stope mining]], which is mining upward, creating a sloping underground room, [[long wall mining]], which is grinding a long ore surface underground, and [[room and pillar]] mining, which is removing ore from rooms while leaving pillars in place to support the roof of the room. Room and pillar mining often leads to [[retreat mining]], in which supporting pillars are removed as miners retreat, allowing the room to cave in, thereby loosening more ore. Additional sub-surface mining methods include [[underground mining (hard rock)|hard rock mining]], bore hole mining, drift and fill mining, long hole slope mining, sub level caving, and [[block caving]].{{Citation needed|date=January 2021}}

== Machines ==
[[File:Bagger-garzweiler.jpg|thumb|upright=1.35|The [[Bagger 288]] is a [[bucket-wheel excavator]] used in [[strip mining]]. It is also one of the largest land vehicles of all time.]]
[[File:Coal Haul Truck at North Antelope Rochelle.png|thumb|A Bucyrus Erie 2570 dragline and [[Caterpillar 797|CAT 797]] haul truck at the North Antelope Rochelle opencut coal mine]]
[[Heavy machinery]] is used in mining to explore and develop sites, to remove and stockpile overburden, to break and remove rocks of various hardness and toughness, to process the ore, and to carry out reclamation projects after the mine is closed. Bulldozers, drills, explosives and trucks are all necessary for excavating the land. In the case of [[placer mining]], unconsolidated gravel, or [[alluvium]], is fed into machinery consisting of a hopper and a shaking screen or [[trommel]] which frees the desired minerals from the waste gravel. The minerals are then concentrated using [[sluices]] or jigs.{{Citation needed|date=January 2021}}

Large [[diamond drilling|drills]] are used to sink shafts, excavate stopes, and obtain samples for analysis. [[Tram]]s are used to transport miners, minerals and waste. Lifts carry miners into and out of mines, and move rock and ore out, and machinery in and out, of underground mines. Huge trucks, shovels and cranes are employed in surface mining to move large quantities of overburden and ore. Processing plants use large crushers, mills, reactors, roasters and other equipment to consolidate the mineral-rich material and extract the desired compounds and metals from the ore.<ref>{{Cite web |date=2017-01-28 |title=12.9: Mining |url=https://geo.libretexts.org/Bookshelves/Geology/Fundamentals_of_Geology_(Schulte)/12%3A_Geological_Implications/12.09%3A_Mining |access-date=2024-06-21 |website=Geosciences LibreTexts |language=en}}</ref>

== Processing ==
{{Main|Mineral processing|Extractive metallurgy}}
Once the mineral is extracted, it is often then processed. The science of [[extractive metallurgy]] is a specialized area in the science of metallurgy that studies the extraction of valuable metals from their ores, especially through chemical or mechanical means.<ref>{{cite web|title=Metallurgy - Extractive metallurgy|url=https://www.britannica.com/science/metallurgy|access-date=2021-06-04|website=Encyclopedia Britannica|language=en|archive-date=2021-06-02|archive-url=https://web.archive.org/web/20210602104136/https://www.britannica.com/science/metallurgy|url-status=live}}</ref><ref>{{cite web|title=Mining Concentrate Thickener|url=https://redmeters.com/mining-concentrate-thickener/|access-date=2021-03-29|website=Red Meters|language=en-US|archive-date=2021-06-25|archive-url=https://web.archive.org/web/20210625080319/https://redmeters.com/mining-concentrate-thickener/|url-status=dead}}</ref>

[[Mineral processing]] (or mineral dressing) is a specialized area in the science of metallurgy that studies the mechanical means of crushing, grinding, and washing that enable the separation (extractive metallurgy) of valuable metals or minerals from their [[gangue]] (waste material). Processing of placer ore material consists of gravity-dependent methods of separation, such as [[Sluice box]]es. Only minor shaking or washing may be necessary to disaggregate (unclump) the sands or gravels before processing. Processing of ore from a lode mine, whether it is a surface or subsurface mine, requires that the rock ore be crushed and pulverized before extraction of the valuable minerals begins. After lode ore is crushed, recovery of the valuable minerals is done by one, or a combination of several, mechanical and chemical techniques.<ref>{{Cite web |title=Minerals Mining Conveyors {{!}} Mineral Mining Conveyor Products |url=https://www.asgco.com/products/industry/minerals-mining/ |access-date=2023-04-03 |website=ASGCO |language=en-US |archive-date=2023-01-26 |archive-url=https://web.archive.org/web/20230126230134/https://www.asgco.com/products/industry/minerals-mining/ |url-status=live }}</ref>

Since most metals are present in ores as oxides or sulfides, the metal needs to be [[Redox|reduced]] to its metallic form. This can be accomplished through chemical means such as [[smelting]] or through electrolytic reduction, as in the case of [[aluminium]]. [[Geometallurgy]] combines the geologic sciences with extractive metallurgy and mining.<ref name="Geosciences LibreTexts-2017">{{Cite web |date=2017-01-28 |title=12.9: Mining |url=https://geo.libretexts.org/Bookshelves/Geology/Fundamentals_of_Geology_(Schulte)/12%3A_Geological_Implications/12.09%3A_Mining |access-date=2023-04-03 |website=Geosciences LibreTexts |language=en |archive-date=2023-04-02 |archive-url=https://web.archive.org/web/20230402063622/https://geo.libretexts.org/Bookshelves/Geology/Fundamentals_of_Geology_(Schulte)/12%3A_Geological_Implications/12.09%3A_Mining |url-status=live }}</ref>

In 2018, led by Chemistry and Biochemistry professor Bradley D. Smith, [[University of Notre Dame]] researchers "invented a new class of molecules whose shape and size enable them to capture and contain precious metal ions," reported in a study published by the [[Journal of the American Chemical Society]]. The new method "converts gold-containing ore into [[chloroauric acid]] and extracts it using an industrial solvent. The container molecules are able to selectively separate the gold from the solvent without the use of water stripping." The newly developed molecules can eliminate water stripping, whereas mining traditionally "relies on a 125-year-old method that treats gold-containing ore with large quantities of poisonous [[sodium cyanide]]...  this new process has a milder environmental impact and that, besides gold, it can be used for capturing other metals such as platinum and palladium," and could also be used in urban mining processes that remove precious metals from wastewater streams.<ref>[http://www.mining.com/scientists-develop-technique-reduce-cost-environmental-impact-mining-precious-metal/ Leotaud, V. R.] {{Webarchive|url=https://web.archive.org/web/20180612143920/http://www.mining.com/scientists-develop-technique-reduce-cost-environmental-impact-mining-precious-metal/ |date=2018-06-12 }} "Scientists develop technique to reduce cost, environmental impact of mining precious metal", by Valentina Ruiz Leotaud''Mining.com'', June 10, 2018.</ref>

==Environmental effects==
{{Excerpt|Environmental effects of mining}}

=== Environmental regulation ===
[[File:Iron hydroxide precipitate in stream.jpg|thumb|upright|Iron hydroxide precipitate stains a stream receiving acid drainage from surface coal mining.]]
Countries with strongly enforced mining regulations commonly require [[environmental impact assessment]], development of [[environmental management]] plans, and [[mine closure planning]] prior beginning mine operations. [[Environmental monitoring]] during operation and after closure may also be required. Government regulations may not be well enforced, especially in the developing world.<ref name="Geosciences LibreTexts-2017" />

For major mining companies and any company seeking international financing, there are a number of other mechanisms to enforce environmental standards. These generally relate to financing standards such as the [[Equator Principles]], [[International Finance Corporation|IFC]] environmental standards, and criteria for [[Socially responsible investing]]. Mining companies have used this oversight from the financial sector to argue for some level of [[industry self-regulation]].<ref name=RocksHardPlaces>Moody R. (2007). ''Rocks and Hard Places''. Zed Books.</ref> In 1992, a Draft Code of Conduct for Transnational Corporations was proposed at the [[Earth Summit (1992)|Rio Earth Summit]] by the UN Centre for Transnational Corporations (UNCTC), but the Business Council for Sustainable Development (BCSD) together with the International Chamber of Commerce (ICC) argued successfully for self-regulation instead.<ref>Abrahams D. (2005). [http://www.business-humanrights.org/Links/Repository/276544/link_page_view Regulations for Corporations: A historical account of TNC regulation] {{Webarchive|url=https://web.archive.org/web/20111001000506/http://www.business-humanrights.org/Links/Repository/276544/link_page_view |date=2011-10-01 }}, p. 6. UNRISD.</ref>

This was followed by the Global Mining Initiative which was begun by nine of the largest metals and mining companies and which led to the formation of the [[International Council on Mining and Metals]], whose purpose was to "act as a catalyst" in an effort to improve social and environmental performance in the mining and metals industry internationally.<ref name=RocksHardPlaces/> The mining industry has provided funding to various conservation groups, some of which have been working with conservation agendas that are at odds with an emerging acceptance of the rights of indigenous people – particularly the right to make land-use decisions.<ref>{{cite journal |title=A Challenge to Conservationists: Can we protect natural habitats without abusing the people who live in them? |url=http://www.worldwatch.org/node/565 |first=Mac |last=Chapin |date=2004-10-15 |access-date=2010-02-18 |journal=World Watch Magazine |series=6 |volume=17 |archive-url=https://web.archive.org/web/20100802101924/http://www.worldwatch.org/node/565 |archive-date=2010-08-02 |url-status=dead }}</ref>

Certification of [[Mineral industry of Peru|mines with good practices]] occurs through the [[International Organization for Standardization]] (ISO). For example, [[ISO 9000]] and [[ISO 14001]], which certify an "auditable environmental management system", involve short inspections, although they have been accused of lacking rigor.{{clarify|date=December 2013}}<!--Does everything in this sentence following "which" refer to BOTH ISO 9000 and ISO 14001? If not, the sentence needs fixing.--><ref name=RocksHardPlaces/>{{rp|183–84}} Certification is also available through [[Ceres (organization)|Ceres]]' [[Global Reporting Initiative]], but these reports are voluntary and unverified. Miscellaneous other certification programs exist for various projects, typically through nonprofit groups.<ref name=RocksHardPlaces/>{{rp|185–86}}

The purpose of a 2012 EPS PEAKS paper<ref>Bloom, M.J. & Denison, M. (2012) Environmental management for extractives, Professional Evidence and Applied Knowledge Services http://partnerplatform.org/?zl177g4a {{Webarchive|url=https://web.archive.org/web/20200923085737/https://partnerplatform.org/unknown_code/zl177g4a/ |date=2020-09-23 }}</ref> was to provide evidence on policies managing [[Environmental economics|ecological costs]] and maximize [[Socioeconomics|socio-economic]] benefits of mining using host country regulatory initiatives. It found existing literature suggesting donors encourage developing countries to:
* Make the environment-poverty link and introduce cutting-edge wealth measures and [[natural capital]] accounts.
* Reform old taxes in line with more recent financial innovation, engage directly with the companies, enact land use and impact assessments, and incorporate specialized support and standards agencies.
* Set in play transparency and community participation initiatives using the wealth accrued.

===Waste===
{{Further|Tailings}}[[File:Teghut Mine - waste rock storage.jpg|thumb|right| Location of waste rock storage (center) at Teghut (village) Copper-Molybdenum Mine in [[Armenia]]'s northern Lori province]]
Ore mills generate large amounts of waste, called [[tailings]].<ref>{{Cite journal |last1=Zvereva |first1=V. P. |last2=Frolov |first2=K. R. |last3=Lysenko |first3=A. I. |date=2021-10-13 |title=Chemical reactions and conditions of mineral formation at tailings storage facilities of the Russian Far East |url=https://mst.misis.ru/jour/article/view/289 |journal=Gornye Nauki I Tekhnologii = Mining Science and Technology (Russia) |volume=6 |issue=3 |pages=181–191 |doi=10.17073/2500-0632-2021-3-181-191 |s2cid=243263530 |issn=2500-0632 |doi-access=free |access-date=2022-11-03 |archive-date=2022-07-08 |archive-url=https://web.archive.org/web/20220708171644/https://mst.misis.ru/jour/article/view/289 |url-status=live }}</ref> For example, 99 tons of waste is generated per ton of [[copper]], with even higher ratios in [[gold mining]] – because only 5.3 g of gold is extracted per ton of ore, a ton of gold produces 200,000 tons of tailings.<ref>{{cite web|title = What is the Cost of Mining Gold?|url = http://www.visualcapitalist.com/what-is-the-cost-of-mining-gold/|website = Visual Capitalist|access-date = 2015-06-11|date = 2013-05-21|archive-date = 2015-06-12|archive-url = https://web.archive.org/web/20150612164752/http://www.visualcapitalist.com/what-is-the-cost-of-mining-gold/|url-status = live}}</ref> (As time goes on and richer deposits are exhausted – and technology improves – this number is going down to .5 g and less.) These tailings can be toxic. Tailings, which are usually produced as a [[slurry]], are most commonly dumped into ponds made from naturally existing valleys.<ref name=EPADesignDams>US EPA. (1994). [http://www.epa.gov/osw/nonhaz/industrial/special/mining/.../tailings.pdf Technical Report: Design and Evaluation of Tailings Dams]{{dead link|date=November 2016}}.</ref> These ponds are secured by impoundments ([[dam]]s or [[embankment dam]]s).<ref name=EPADesignDams/> In 2000 it was estimated that 3,500 tailings impoundments existed, and that every year, 2 to 5 major [[Tailings dam failure|failures]] and 35 minor failures occurred.<ref name="StewardDams" /> For example, in the [[Marcopper mining disaster]] at least 2 million tons of tailings were released into a local river.<ref name=StewardDams>TE Martin, MP Davies. (2000). [http://www.infomine.com/publications/docs/Martin2000.pdf Trends in the stewardship of tailings dams] {{Webarchive|url=https://web.archive.org/web/20160303193659/http://www.infomine.com/publications/docs/Martin2000.pdf |date=2016-03-03 }}.</ref> In 2015, [[Barrick Gold]] Corporation spilled over 1 million liters of [[cyanide]] into a total of five rivers in Argentina near their [[Veladero mine]].<ref>{{Cite news|url = https://www.reuters.com/article/us-barrick-gold-mine-argentina-exclusive/exclusive-barrick-faces-sanctions-for-argentina-cyanide-spills-judge-says-idUSKBN1841BK|title = Exclusive: Barrick faces sanctions for Argentina cyanide spills|newspaper = Reuters|date = 2017-05-08|access-date = 2019-06-21|archive-date = 2021-10-09|archive-url = https://web.archive.org/web/20211009182319/https://www.reuters.com/article/us-barrick-gold-mine-argentina-exclusive/exclusive-barrick-faces-sanctions-for-argentina-cyanide-spills-judge-says-idUSKBN1841BK|url-status = live}}</ref> Since 2007 in central Finland, the Talvivaara Terrafame polymetal mine's waste effluent and leaks of saline mine water have resulted in ecological collapse of a nearby lake.<ref>{{Cite journal|last1=Leppänen|first1=Jaakko Johannes|last2=Weckström|first2=Jan|last3=Korhola|first3=Atte|date=2017-09-05|title=Multiple mining impacts induce widespread changes in ecosystem dynamics in a boreal lake|journal=Scientific Reports|volume=7|issue=1|page=10581|doi=10.1038/s41598-017-11421-8|pmid=28874843|pmc=5585241|issn=2045-2322|bibcode=2017NatSR...710581L}}</ref> Subaqueous tailings disposal is another option.<ref name=EPADesignDams/> The mining industry has argued that submarine tailings disposal (STD), which disposes of tailings in the sea, is ideal because it avoids the risks of tailings ponds. The practice is illegal in the [[United States]] and [[Canada]], but it is used in the developing world.<ref>Coumans C. (2002). [http://www.bostgroup.com.au/images/mining/Submarine-Tailings-Disposal-Toolkit.pdf Mining's Problem with Waste] {{Webarchive|url=https://web.archive.org/web/20170706213221/https://www.bostgroup.com.au/images/mining/Submarine-Tailings-Disposal-Toolkit.pdf |date=2017-07-06 }}. MiningWatch Canada.</ref>

The waste is classified as either sterile or mineralized, with acid generating potential, and the movement and storage of this material form a major part of the mine planning process. When the mineralised package is determined by an economic cut-off, the near-grade mineralised waste is usually dumped separately with view to later treatment should market conditions change and it becomes economically viable. [[Civil engineering]] design parameters are used in the design of the waste dumps, and special conditions apply to high-rainfall areas and to seismically active areas. Waste dump designs must meet all regulatory requirements of the country in whose jurisdiction the mine is located. It is also common practice to rehabilitate dumps to an internationally acceptable standard, which in some cases means that higher standards than the local regulatory standard are applied.<ref name="StewardDams" />

==Industry==
{{Main|List of mines|List of mining companies|:Category:Mining companies|:Category:Mining industry by country}}

[[File:Siilinjärvi Särkijärvi pit.jpg|thumb|The Särkijärvi pit of the [[Siilinjärvi carbonatite|apatite mine]] in [[Siilinjärvi]], [[Finland]]]]

Mining exists in many countries. [[London]] is the headquarters of [[Anglo American plc|Anglo American]]. [[Melbourne]] is the headquarters of the worlds two largest mining companies [[BHP]] and [[Rio Tinto (corporation)|Rio Tinto]].<ref name=NAIndustryProfile>MacDonald A. (2002). [http://www.iisd.org/publications/pub.aspx?id=448 Industry in Transition: A Profile of the North American Mining Sector] {{Webarchive|url=https://web.archive.org/web/20110728143932/http://www.iisd.org/publications/pub.aspx?id=448 |date=2011-07-28 }}. [http://www.iisd.org/pdf/2001/mmsd_na_mining_profile.pdf Free full-text] {{Webarchive|url=https://web.archive.org/web/20130915070428/http://www.iisd.org/pdf/2001/mmsd_na_mining_profile.pdf |date=2013-09-15 }}</ref> The US mining industry is also large, but it is dominated by extraction of coal and other nonmetal minerals (e.g., rock and sand), and various regulations have worked to reduce the significance of mining in the United States.<ref name=NAIndustryProfile/> In 2007, the total [[market capitalization]] of mining companies was reported at US$962&nbsp;billion, which compares to a total global market cap of publicly traded companies of about US$50&nbsp;trillion in 2007.<ref>Reuters. [https://www.reuters.com/article/idUSL2144839620070321 Global stock values top $50 trln: industry data].</ref> In 2002, Chile and Peru were reportedly the major mining countries of [[South America]].<ref>[http://www.oecd.org/env/1819617.pdf Environmental Effects of Foreign Investment Versus Domestic Investment in the Mining Sector In Latin-America] {{Webarchive|url=https://web.archive.org/web/20161231144208/http://www.oecd.org/env/1819617.pdf |date=2016-12-31 }}. OECD.</ref> The [[mineral industry of Africa]] includes the mining of various minerals; it produces relatively little of the industrial metals [[copper]], [[lead]], and [[zinc]], but according to one estimate has as a percent of world reserves 40% of [[gold]], 60% of [[cobalt]], and 90% of the world's [[platinum group]] metals.<ref>[https://web.archive.org/web/20010108000000/http://www.mbendi.com/indy/ming/af/p0005.htm Mining in Africa – Overview]. Mbendi.</ref> [[Mining in India]] is a significant part of that country's economy. In the developed world, [[mining in Australia]], with BHP founded and headquartered in the country, and mining in Canada are particularly significant. For [[rare earth mineral]]s mining, [[China]] reportedly controlled 95% of production in 2013.<ref>{{Cite web |last=Nesbit |first=Jeff |date=April 2, 2013 |title=China's Continuing Monopoly Over Rare Earth Minerals |url=https://www.usnews.com/news/blogs/at-the-edge/2013/04/02/chinas-continuing-monopoly-over-rare-earth-minerals |url-status=live |archive-url=https://web.archive.org/web/20230403093320/https://www.usnews.com/news/blogs/at-the-edge/2013/04/02/chinas-continuing-monopoly-over-rare-earth-minerals |archive-date=Apr 3, 2023 |website=[[U.S. News & World Report]]}}</ref>
[[File:Bingham Canyon April 2005.jpg|thumb|right|The [[Bingham Canyon Mine]] of Rio Tinto's subsidiary, Kennecott Utah Copper]]
While exploration and mining can be conducted by individual entrepreneurs or small businesses, most modern-day mines are large enterprises requiring large amounts of capital to establish. Consequently, the mining sector of the industry is dominated by large, often multinational, companies, most of them [[publicly listed]]. It can be argued that what is referred to as the 'mining industry' is actually two sectors, one specializing in exploration for new resources and the other in mining those resources. The exploration sector is typically made up of individuals and small mineral resource companies, called "juniors", which are dependent on [[venture capital]]. The mining sector is made up of large multinational companies that are sustained by production from their mining operations. Various other industries such as equipment manufacture, environmental testing, and metallurgy analysis rely on, and support, the mining industry throughout the world. Canadian stock exchanges have a particular focus on mining companies, particularly junior exploration companies through Toronto's [[TSX Venture Exchange]]; Canadian companies raise capital on these exchanges and then invest the money in exploration globally.<ref name=NAIndustryProfile/> Some have argued that below juniors there exists a substantial sector of illegitimate companies primarily focused on manipulating stock prices.<ref name=NAIndustryProfile/>

Mining operations can be grouped into five major categories in terms of their respective resources. These are [[Extraction of petroleum|oil and gas extraction]], [[coal mining]], metal ore mining, nonmetallic mineral mining and quarrying, and mining support activities.<ref>{{cite web|url=https://www.census.gov/cgi-bin/sssd/naics/naicsrch?chart_code=21&search=2017%20NAICS%20Search|title=2017 North American Industry Classification System Definition 21 |website=US Census Bureau |access-date=2018-07-19}}</ref> Of all of these categories, [[oil and gas extraction]] remains one of the largest in terms of its global economic importance. Prospecting potential mining sites, a vital area of concern for the mining industry, is now done using sophisticated new technologies such as seismic prospecting and [[Remote sensing|remote-sensing satellites]]. Mining is heavily affected by the prices of the [[commodity]] minerals, which are often volatile. The [[2000s commodities boom]] ("commodities supercycle") increased the prices of commodities, driving aggressive mining. In addition, the price of gold increased dramatically in the 2000s, which increased [[gold mining]]; for example, one study found that conversion of forest in the Amazon increased six-fold from the period 2003–2006 (292 ha/yr) to the period 2006–2009 (1,915 ha/yr), largely due to artisanal mining.<ref>Swenson JJ, Carter CE, Domec J-C, Delgado CI (2011) [http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0018875 Gold Mining in the Peruvian Amazon: Global Prices, Deforestation, and Mercury Imports] {{Webarchive|url=https://web.archive.org/web/20130921014850/http://www.plosone.org/article/info:doi/10.1371/journal.pone.0018875 |date=2013-09-21 }}. PLoS ONE 6(4): e18875. {{doi|10.1371/journal.pone.0018875|doi-access=free}}. Lay summary: [http://www.nicholas.duke.edu/dukenvironment/f11/amazon-gold-fever-comes-with-a-high-environmental-cost Amazon Gold Fever Comes with a High Environmental Cost] {{webarchive|url=https://web.archive.org/web/20130309181431/http://www.nicholas.duke.edu/dukenvironment/f11/amazon-gold-fever-comes-with-a-high-environmental-cost |date=2013-03-09 }}</ref>

===Corporate classifications===
Mining companies can be classified based on their size and financial capabilities:
* ''Major'' companies are considered to have an adjusted annual mining-related revenue of more than US$500 million, with the financial capability to develop a major mine on its own.
* ''Intermediate'' companies have at least $50 million in annual revenue but less than $500 million.
* ''Junior'' companies rely on [[equity (economics)|equity]] financing as their principal means of funding exploration. Juniors are mainly pure exploration companies, but may also produce minimally, and do not have a revenue exceeding US$50&nbsp;million.<ref name=MEG-CorpClass>{{cite web|url=http://www.metalseconomics.com/pdf/PDAC%202009%20World%20Exploration%20Trends.pdf|title=Metals Economics Group World Exploration Trends Report|access-date=2009-05-05|publisher=Metals Economics Group Inc.|archive-date=2012-08-03|archive-url=https://web.archive.org/web/20120803095004/http://www.metalseconomics.com/pdf/PDAC|url-status=dead}}</ref>
Re their valuation, and stock market characteristics, see {{section link|Valuation (finance)|Valuation of mining projects}}.

===Regulation and governance===
[[File:EITI Global Conference 2016.jpg|thumb|right|[[EITI]] Global Conference 2016]]
New regulations and a process of legislative reforms aim to improve the harmonization and stability of the mining sector in mineral-rich countries.<ref>{{cite journal
|last=Cambell
|first=Bonnie
|title=Regulation & Legitimacy in the Mining Industry in Africa: Where does
|journal=Review of African Political Economy
|year=2008
|volume=35
|issue=3
|pages=367–89
|url=http://docserver.ingentaconnect.com/deliver/connect/routledg/03056244/v35n3/s2.pdf?expires=1302287825&id=62185656&titleid=10738&accname=The+John+Rylands+University+Library%2C+The+University+of+Manchester&checksum=6F04E83AFE9F7C22DFB0A7848C306CC6
|access-date=7 April 2011
|doi=10.1080/03056240802410984
|s2cid=154670334
|archive-date=31 March 2020
|archive-url=https://web.archive.org/web/20200331130216/http://docserver.ingentaconnect.com/deliver/connect/routledg/03056244/v35n3/s2.pdf?expires=1302287825&id=62185656&titleid=10738&accname=The+John+Rylands+University+Library%2C+The+University+of+Manchester&checksum=6F04E83AFE9F7C22DFB0A7848C306CC6
|url-status=live
}}</ref> New legislation for mining industry in African countries still appears to be an issue, but has the potential to be solved, when a consensus is reached on the best approach.<ref name="Lucia">
{{cite web
 |website=The World Bank
 |title      = The World Bank's Evolutionary Approach to Mining Sector Reform
 |url        = http://siteresources.worldbank.org/INTOGMC/Resources/336099-1288881181404/7530465-1288881207444/eifd19_mining_sector_reform.pdf
|archive-url=https://web.archive.org/web/20140417054540/http://siteresources.worldbank.org/INTOGMC/Resources/336099-1288881181404/7530465-1288881207444/eifd19_mining_sector_reform.pdf
|archive-date=2014-04-17
 |access-date = 4 April 2011
}}
</ref> By the beginning of the 21st century, the booming and increasingly complex mining sector in mineral-rich countries was providing only slight benefits to local communities, especially in given the sustainability issues. Increasing debate and influence by [[NGOs]] and local communities called for new approaches which would also include disadvantaged communities, and work towards [[sustainable development]] even after [[mine closure]] (including transparency and revenue management). By the early 2000s, community development issues and resettlements became mainstream concerns in World Bank mining projects.<ref name="Lucia"/> Mining-industry expansion after mineral prices increased in 2003 and also potential fiscal revenues in those countries created an omission in the other economic sectors in terms of finances and development. Furthermore, this highlighted regional and local demand for mining revenues and an inability of sub-national governments to effectively use the revenues. The [[Fraser Institute]] (a Canadian think tank) has highlighted{{clarify|date=December 2016}} the environmental protection laws in developing countries, as well as voluntary efforts by mining companies to improve their environmental impact.<ref>[http://www.miningfacts.org/Environment/Do-Canadian-mining-companies-operating-abroad-face-weaker-environmental-regulations/ Do Canadian mining companies operating abroad face weaker environmental regulations?] {{Webarchive|url=https://web.archive.org/web/20180706030924/http://www.miningfacts.org/Environment/Do-Canadian-mining-companies-operating-abroad-face-weaker-environmental-regulations/ |date=2018-07-06 }}. MiningFacts.org. [[Fraser Institute]].</ref>

In 2007, the [[Extractive Industries Transparency Initiative]] (EITI) was mainstreamed{{clarify|date=December 2016}} in all countries cooperating with the World Bank in mining industry reform.<ref name="Lucia"/> The EITI operates and was implemented with the support of the EITI multi-donor trust fund, managed by the World Bank.<ref>{{cite web|last=Extractive Industries Transparency Initiative|title=Governance Structure|url=http://eiti.org/about/governance|access-date=4 April 2011|archive-date=13 April 2011|archive-url=https://web.archive.org/web/20110413135638/http://eiti.org/about/governance|url-status=live}}</ref> The EITI aims to increase transparency in transactions between governments and companies in extractive industries<ref>{{cite web
|publisher=Business and Human Right Resource Centre (2009)
|title=Principles: Extractive Industries Transparency Initiative (EITI)
|url=http://www.business-humanrights.org/Categories/Principles/ExtractiveIndustriesTransparencyInitiativeEITI
|access-date=6 April 2011
|archive-date=8 April 2011
|archive-url=https://web.archive.org/web/20110408081137/http://www.business-humanrights.org/Categories/Principles/ExtractiveIndustriesTransparencyInitiativeEITI
|url-status=dead
}}</ref> by monitoring the revenues and benefits between industries and recipient governments. The entrance process is voluntary for each country and is monitored by multiple stakeholders including governments, private companies and civil society representatives, responsible for disclosure and dissemination of the reconciliation report;<ref name="Lucia"/> however, the competitive disadvantage of company-by-company public report is for some of the businesses in Ghana at least, the main constraint.<ref>{{cite web|last=The Ghanaian Journal|title=At the Fifth EITI Global Conference|url=http://www.theghanaianjournal.com/2011/03/16/at-the-fifth-eiti-global-conference/|access-date=3 April 2011|archive-date=1 January 2016|archive-url=https://web.archive.org/web/20160101075848/http://www.theghanaianjournal.com/2011/03/16/at-the-fifth-eiti-global-conference/|url-status=dead}}</ref> Therefore, the outcome assessment in terms of failure or success of the new EITI regulation does not only "rest on the government's shoulders" but also on civil society and companies.<ref name="Owona, S.O.">{{cite web|last=Extractive Industries Transparency Initiative|title=Report of 5th EITI Global Conference in Paris, 2011|url=http://eiti.org/files/Report_of_5th_EITI_Global_Conference.pdf|archive-url=https://web.archive.org/web/20110726083709/http://eiti.org/files/Report_of_5th_EITI_Global_Conference.pdf|url-status=dead|archive-date=26 July 2011|access-date=4 April 2011}}</ref>

However, implementation has issues; inclusion or exclusion of [[artisanal mining]] and small-scale mining (ASM) from the EITI and how to deal with "non-cash" payments made by companies to subnational governments. Furthermore, the disproportionate revenues the mining industry can bring to the comparatively small number of people that it employs,<ref name="Lulu">{{cite web|publisher=World Bank's Oil, Gas and Mining Policy and Operations Unit (COCPO)|title=Advancing the EITI in the Mining Sector: Implementation Issues|url-status=dead|archive-url=https://web.archive.org/web/20140703183803/http://siteresources.worldbank.org/EXTOGMC/Resources/advancing_eiti_mining.pdf|archive-date=3 July 2014|url=http://siteresources.worldbank.org/EXTOGMC/Resources/advancing_eiti_mining.pdf|access-date=6 April 2011}}</ref> causes other problems, like a lack of investment in other less lucrative sectors, leading to swings in government revenue because of volatility in the oil markets. Artisanal mining is clearly an issue in EITI Countries such as the Central African Republic, D.R. Congo, Guinea, Liberia and Sierra Leone – i.e. almost half of the mining countries implementing the EITI.<ref name="Lulu"/> Among other things, limited scope of the EITI involving disparity in terms of knowledge of the industry and negotiation skills, thus far flexibility of the policy (e.g. liberty of the countries to expand beyond the minimum requirements and adapt it to their needs), creates another risk of unsuccessful implementation. Public awareness increase, where government should act as a bridge between public and initiative for a successful outcome of the policy is an important element to be considered.<ref>{{cite web|last=Revenue Watch Institute |date=20 April 2010 |title=Promoting Transparency in the Extractive Sectors: An EITI Training for Tanzania Legislators |url=http://www.revenuewatch.org/news/news-article/tanzania/promoting-transparency-extractive-sectors-eiti-training-tanzania-legislat |access-date=6 April 2011 |url-status=dead |archive-url=https://web.archive.org/web/20110720234318/http://www.revenuewatch.org/news/news-article/tanzania/promoting-transparency-extractive-sectors-eiti-training-tanzania-legislat |archive-date=July 20, 2011 }}</ref>

===World Bank===
[[File:World Bank logo.svg|thumb|upright|World Bank logo]]
The [[World Bank]] has been involved in mining since 1955, mainly through grants from its [[International Bank for Reconstruction and Development]], with the Bank's [[Multilateral Investment Guarantee Agency]] offering [[political risk]] insurance.<ref>For an overview of the Bank and mining, see [http://www.pdac.ca/pdac/publications/papers/2001/pdf/Weber-Fahr(T-8).pdf Mining, Sustainability and Risk:World Bank Group Experiences] {{webarchive|url=https://web.archive.org/web/20110929090158/http://www.pdac.ca/pdac/publications/papers/2001/pdf/Weber-Fahr(T-8).pdf |date=2011-09-29 }}</ref> Between 1955 and 1990 it provided about $2&nbsp;billion to fifty mining projects, broadly categorized as reform and rehabilitation, greenfield mine construction, mineral processing, technical assistance, and engineering. These projects have been criticized, particularly the [[Carajás Mine|Ferro Carajas project]] of Brazil, begun in 1981.<ref>See the 1995 ''World Development'' '''23'''(3) pp. 385–400.</ref> The World Bank established mining codes intended to increase foreign investment; in 1988, it solicited feedback from 45 mining companies on how to increase their involvement.<ref name=RocksHardPlaces/>{{rp|20}}

In 1992, the World Bank began to push for privatization of [[government-owned corporation|government-owned mining companies]] with a new set of codes, beginning with its report ''The Strategy for African Mining''. In 1997, Latin America's largest miner [[Vale (mining company)|Companhia Vale do Rio Doce]] (CVRD) was privatized. These and other developments, such as the Philippines 1995 Mining Act, led the bank to publish a third report (''Assistance for Minerals Sector Development and Reform in Member Countries'') which endorsed mandatory environment impact assessments and attention to the concerns of the local population. The codes based on this report are influential in the legislation of developing nations. The new codes are intended to encourage development through tax holidays, zero custom duties, reduced income taxes, and related measures.<ref name=RocksHardPlaces/>{{rp|22}} The results of these codes were analyzed by a group from the University of Quebec, which concluded that the codes promote foreign investment but "fall very short of permitting sustainable development".<ref>GRAMA. (2003). [http://migs.concordia.ca/documents/MIGS_Campbell_Feb07.pdf The Challenges of Development, Mining Codes in Africa And Corporate Responsibility] {{Webarchive|url=https://web.archive.org/web/20160101075848/http://migs.concordia.ca/documents/MIGS_Campbell_Feb07.pdf |date=2016-01-01 }}. In: ''International and Comparative Mineral Law and Policy: Trends and Prospects''. Summarized in the [http://www.unites.uqam.ca/grama/pdf/AfricaCodes-Mining_Journal.pdf African Mining Codes Questioned].</ref> The observed negative correlation between natural resources and economic development is known as the [[resource curse]].{{Citation needed|date=January 2021}}

==Safety==
[[File:Transporte por cable de minerales, Devnya, Bulgaria, 2016-05-27, DD 65.jpg|thumb|Mining transport in Devnya, Bulgaria]]

[[File:Coal miner spraying rock dust.jpg|thumb|right|A coal miner in [[West Virginia]] spraying rockdust to reduce the combustible fraction of coal dust in the air]]

{{Main|Mine safety}}
Safety has long been a concern in the mining business, especially in sub-surface mining. The [[Courrières mine disaster]], Europe's worst [[mining accident]], involved the death of 1,099 miners in Northern [[France]] on March 10, 1906. This disaster was surpassed only by the [[Benxihu Colliery]] accident in [[China]] on April 26, 1942, which killed 1,549 miners.<ref>{{cite news|url=http://www.lemonde.fr/web/article/0,1-0@2-3226,36-749532,0.html|title=Marcel Barrois|date=March 10, 2006|newspaper=Le Monde|language=fr}}{{Dead link|date=December 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> While mining today is substantially safer than it was in previous decades, [[mining accident]]s still occur. Government figures indicate that 5,000 Chinese miners die in accidents each year, while other reports have suggested a figure as high as 20,000.<ref>"[https://web.archive.org/web/20070305132334/http://www.time.com/time/magazine/article/0,9171,1595235,00.html Where The Coal Is Stained With Blood]". ''Time''. March 2, 2007</ref> Between 1870 and 1920, in Queensland Australia, an increase in mining accidents lead to more safety measures surrounding the use of explosives for mining.<ref>{{Cite journal |last=Wegner |first=Jan Helen |date=2010-06-22 |title=BLASTING OUT: EXPLOSIVES PRACTICES IN QUEENSLAND METALLIFEROUS MINES, 1870-1920: Blasting out |url=https://onlinelibrary.wiley.com/doi/10.1111/j.1467-8446.2010.00301.x |journal=Australian Economic History Review |language=en |volume=50 |issue=2 |pages=193–208 |doi=10.1111/j.1467-8446.2010.00301.x|url-access=subscription }}</ref> Mining accidents continue worldwide, including accidents causing dozens of fatalities at a time such as the 2007 [[Ulyanovskaya Mine disaster]] in Russia, the [[2009 Heilongjiang mine explosion]] in China, and the 2010 [[Upper Big Branch Mine disaster]] in the United States. Mining has been identified by the [[National Institute for Occupational Safety and Health]] (NIOSH) as a priority industry sector in the [[National Occupational Research Agenda]] (NORA) to identify and provide intervention strategies regarding occupational health and safety issues.<ref>{{cite web|url=https://www.cdc.gov/nora/councils/mining/default.html|title=NORA Mining Sector Council {{!}} NIOSH {{!}} CDC|date=2017-10-24|website=www.cdc.gov|access-date=2018-02-22|archive-date=2019-06-16|archive-url=https://web.archive.org/web/20190616143603/https://www.cdc.gov/nora/councils/mining/default.html|url-status=live}}</ref> The [[Mine Safety and Health Administration|Mining Safety and Health Administration]] (MSHA) was established in 1978 to "work to prevent death, illness, and injury from mining and promote safe and healthful workplaces for US miners."<ref>{{cite web|url=https://www.msha.gov/about/mission|title=Mission {{!}} Mine Safety and Health Administration (MSHA)|website=www.msha.gov|access-date=2018-07-19|archive-date=2018-06-14|archive-url=https://web.archive.org/web/20180614050520/https://www.msha.gov/about/mission|url-status=live}}</ref> Since its implementation in 1978, the number of miner fatalities has decreased from 242 miners in 1978 to 24 miners in 2019.{{Citation needed|date=January 2021}}

There are numerous [[occupational hazard]]s associated with mining, including exposure to [[rockdust]] which can lead to diseases such as [[silicosis]], [[asbestosis]], and [[pneumoconiosis]]. Gases in the mine can lead to [[asphyxia]]tion and could also be ignited. Mining equipment can generate considerable noise, putting workers at risk for [[hearing loss]]. [[Cave-in]]s, [[Rockfall|rock falls]], and exposure to excess heat are also known hazards. The current NIOSH Recommended Exposure Limit (REL) of noise is 85 dBA with a 3 dBA exchange rate and the MSHA Permissible Exposure Limit (PEL) is 90 dBA with a 5 dBA exchange rate as an 8-hour time-weighted average. NIOSH has found that 25% of noise-exposed workers in Mining, Quarrying, and Oil and Gas Extraction have hearing impairment.<ref>{{Cite journal|last1=Masterson|first1=Elizabeth A.|last2=Deddens|first2=James A.|last3=Themann|first3=Christa L.|last4=Bertke|first4=Stephen|last5=Calvert|first5=Geoffrey M.|date=April 2015|title=Trends in worker hearing loss by industry sector, 1981–2010|journal=American Journal of Industrial Medicine|volume=58|issue=4|pages=392–401|doi=10.1002/ajim.22429|issn=1097-0274|pmc=4557728|pmid=25690583}}</ref> The prevalence of hearing loss increased by 1% from 1991 to 2001 within these workers.{{Citation needed|date=January 2021}}

Noise studies have been conducted in several mining environments. Stageloaders (84-102 dBA), shearers (85-99 dBA), auxiliary fans (84–120 dBA), continuous mining machines (78–109 dBA), and roof bolters (92–103 dBA) represent some of the noisiest equipment in underground [[Coal mining|coal mines]].<ref>{{cite web|url=https://www.cdc.gov/niosh/mining/works/coversheet1107.html|title=Summary of Longwall and Continuous Miner Section Noise Studies in Underground Coal Mines|website=www.cdc.gov|date=25 October 2016|access-date=2018-07-19|archive-date=2018-06-27|archive-url=https://web.archive.org/web/20180627020721/https://www.cdc.gov/niosh/mining/works/coversheet1107.html|url-status=live}}</ref> [[Dragline excavator|Dragline]] oilers, dozer operators, and welders using air arcing were occupations with the highest noise exposures among surface coal miners.<ref>{{cite web|url=https://www.cdc.gov/niosh/nioshtic-2/20025335.html|title=Worker exposure and equipment noise in large surface coal mines.|website=www.cdc.gov|access-date=2018-07-19|archive-date=2018-07-19|archive-url=https://web.archive.org/web/20180719054647/https://www.cdc.gov/niosh/nioshtic-2/20025335.html|url-status=live}}</ref> Coal mines had the highest hearing loss injury likelihood.<ref>{{Cite journal|last1=Sun|first1=Kan|last2=Azman|first2=Amanda S.|date=March 2018|title=Evaluating hearing loss risks in the mining industry through MSHA citations|journal=Journal of Occupational and Environmental Hygiene|volume=15|issue=3|pages=246–62|doi=10.1080/15459624.2017.1412584|issn=1545-9632|pmc=5848488|pmid=29200378|bibcode=2018JOEH...15..246S }}</ref>

==Human rights==
In addition to the [[environmental impacts]] of mining processes, a prominent criticism pertaining to this form of extractive practice and of mining companies are the [[human rights]] abuses occurring within mining sites and [[communities]] close to them.<ref>{{cite book |last1=Spohr |first1=Maximilian |title=Human Rights Risks in Mining - A Baseline Study |date=January 2016 |publisher=BGR |page=10 |url=https://www.bmz.de/rue/includes/downloads/BGR_MPFPR__2016__Human_Rights_Risks_in_Mining.pdf |access-date=28 December 2020 |archive-date=31 October 2020 |archive-url=https://web.archive.org/web/20201031165150/http://www.bmz.de/rue/includes/downloads/BGR_MPFPR__2016__Human_Rights_Risks_in_Mining.pdf |url-status=dead }}</ref> Frequently, despite being protected by International [[Labor rights]], miners are not given appropriate equipment to provide them with protection from possible mine collapse or from harmful [[pollutants]] and [[chemicals]] expelled during the mining process, work in inhumane conditions spending numerous hours working in extreme heat, darkness and 14 hour workdays with no allocated time for breaks.<ref>{{cite book |last1=Tamufor |first1=Lindlyn |title=Human Rights Violations in Africa's Mining Sector |publisher=Third World Network - Africa |location=Ghana |page=9 |url=http://twnafrica.org/twnaf_humanrights-compilation.pdf |access-date=28 December 2020 |archive-date=18 August 2021 |archive-url=https://web.archive.org/web/20210818134145/http://twnafrica.org/twnaf_humanrights-compilation.pdf |url-status=dead }}</ref>

===Child labor===
[[File:Breaker Boys 1.jpg|thumb|right|[[Breaker boys]]: child workers who broke down coal at a mine in South [[Pittston]], [[Pennsylvania]], United States in the early 20th century]]
Included within the human rights abuses that occur during mining processes are instances of [[Child labour|child labor]]. These instances are a cause for widespread criticism of mining [[cobalt]], a mineral essential for powering modern technologies such as [[laptops]], [[smartphones]] and [[electric vehicles]]. Many of these cases of child laborers are found in the [[Democratic Republic of Congo]]. Reports have risen of children carrying sacks of cobalt weighing 25&nbsp;kg from small mines to local traders<ref>{{cite news |last1=Financial Times |title=Congo, Child Labor and Your Electric Car |url=https://www.ft.com/content/c6909812-9ce4-11e9-9c06-a4640c9feebb |archive-url=https://ghostarchive.org/archive/20221210/https://www.ft.com/content/c6909812-9ce4-11e9-9c06-a4640c9feebb |archive-date=2022-12-10 |url-access=subscription |newspaper=Financial Times |date=7 July 2019 }}</ref> being paid for their work only in food and accommodation. A number of companies such as [[Apple Inc.|Apple]], [[Google]], [[Microsoft]] and [[Tesla, Inc.|Tesla]] have been implicated in lawsuits brought by families whose children were severely injured or killed during mining activities in Congo.<ref>{{cite web |last1=Kelly |first1=Annie |title=Apple and Google named in US lawsuit over Congolese child cobalt mining deaths |url=https://www.theguardian.com/global-development/2019/dec/16/apple-and-google-named-in-us-lawsuit-over-congolese-child-cobalt-mining-deaths |work=The Guardian |access-date=18 January 2021 |date=16 December 2019}}</ref> In December 2019, 14 Congolese families filed a lawsuit against [[Glencore]], a mining company which supplies the essential cobalt to these multinational corporations with allegations of negligence that led to the deaths of children or injuries such as broken spines, emotional distress and forced labor.{{Citation needed|date=January 2021}}

=== Indigenous peoples ===
There have also been instances of killings and evictions attributed to conflicts with mining companies. Almost a third of 227 murders in 2020 were of Indigenous peoples rights activists on the frontlines of [[Individual action on climate change|climate change activism]] linked to [[logging]], mining, large-scale [[agribusiness]], hydroelectric dams, and other infrastructure, according to [[Global Witness]].<ref>{{cite web|last=Marshall|first=Claire|date=2021-09-13|title=Record number of environmental activists murdered|url=https://news.yahoo.com/more-220-environment-land-rights-000300439.html|access-date=2021-09-13|website=BBC via Yahoo News|language=en-US|archive-date=2021-09-13|archive-url=https://web.archive.org/web/20210913042253/https://news.yahoo.com/more-220-environment-land-rights-000300439.html|url-status=live}}</ref>

The relationship between indigenous peoples and mining is defined by struggles over access to land. In Australia, the Aboriginal [[Bininj]] said mining posed a threat to their living culture and could damage sacred heritage sites.<ref>{{cite web|last1=Behrendt|first1=Larissa|last2=Strelein|first2=Lisa|date=March 2001|title=Old Habits Die Hard: Indigenous Land Rights and Mining in Australia|url=http://www.culturalsurvival.org/publications/cultural-survival-quarterly/old-habits-die-hard-indigenous-land-rights-and-mining|access-date=2021-09-13|website=Cultural Survival|language=en|archive-date=2021-09-13|archive-url=https://web.archive.org/web/20210913042257/https://www.culturalsurvival.org/publications/cultural-survival-quarterly/old-habits-die-hard-indigenous-land-rights-and-mining|url-status=live}}</ref><ref>{{cite web|title=Uranium Mining – The Gundjeihmi Aboriginal Corporation|url=https://www.mirarr.net/pages/uranium-mining|access-date=2021-09-13|website=Mirarr}}</ref>

In the Philippines, an anti-mining movement has raised concerns regarding "the total disregard for [Indigenous communities'] ancestral land rights".<ref name="Tartlet-2001">{{cite web|last=Tartlet|first=R.K.|date=March 2001|title=The Cordillera People's Alliance: Mining and Indigenous Rights in the Luzon Highlands|url=http://www.culturalsurvival.org/publications/cultural-survival-quarterly/cordillera-peoples-alliance-mining-and-indigenous-rights|access-date=2021-09-13|website=Cultural Survival|language=en}}</ref> [[Igorot people|Ifugao peoples]]' opposition to mining led a governor to proclaim a ban on mining operations in Mountain Province, Philippines.<ref name="Tartlet-2001" />

In Brazil, more than 170 tribes organized a march to oppose controversial attempts to strip back indigenous land rights and open their territories to mining operations.<ref>{{cite web|last1=Phillips|first1=Tom|last2=Milhorance|first2=Flávia|date=2021-09-10|title=Indigenous warrior women take fight to save ancestral lands to Brazilian capital|url=https://www.theguardian.com/world/2021/sep/10/indigenous-warrior-women-brazil-ancestral-lands-protest|access-date=2021-09-13|website=The Guardian|language=en}}</ref> The [[United Nations Commission on Human Rights]] has called on Brazil's Supreme Court to uphold Indigenous land rights to prevent exploitation by mining groups and industrial agriculture.<ref>{{cite web|date=2021-08-23|title=Brazil: Supreme Court must uphold indigenous land rights – UN expert|url=https://www.ohchr.org/EN/NewsEvents/Pages/DisplayNews.aspx?NewsID=27400|access-date=2021-09-13|website=UN OHCHR|archive-date=2021-09-13|archive-url=https://web.archive.org/web/20210913042253/https://www.ohchr.org/EN/NewsEvents/Pages/DisplayNews.aspx?NewsID=27400|url-status=live}}</ref>

==Records==
{{update|part=article|date=July 2022|updated=9th July 2022|inaccurate=yes|reason=Deepest mine record was just changed and might need more detail}}
{{See also|Extremes on Earth#Subterranean}}
[[File:Chuquicamata-002.jpg|thumb|right|[[Chuquicamata]], [[Chile]], site of the largest circumference and second deepest [[open-pit mining|open pit]] [[copper]] mine in the world]]
As of 2019, '''[[Mponeng Gold Mine|Mponeng]]''' is the world's deepest mine from ground level, reaching a depth of 4&nbsp;km (2.5&nbsp;mi) below ground level. The trip from the surface to the bottom of the mine takes over an hour. It is a [[gold mine]] in [[South Africa]]'s [[Gauteng]] province. Previously known as [[Western Deep Levels]] #1 Shaft, the underground and surface works were commissioned in 1987. The mine is considered to be one of the most substantial gold mines in the world.

The Moab Khutsong gold mine in [[North West Province (South Africa)]] has the world's longest winding steel wire rope, which is able to lower workers to {{convert|3054|m|ft}} in one uninterrupted four-minute journey.<ref name="Mining and minerals in South Africa">{{cite web
| title = Mining and minerals in South Africa
| url = http://www.southafrica.info/business/economy/sectors/mining.htm
| date = 8 August 2012
| publisher = SouthAfrica.info
| access-date = 13 August 2012
| archive-date = 1 December 2016
| archive-url = https://web.archive.org/web/20161201180059/http://www.southafrica.info/business/economy/sectors/mining.htm
| url-status = live
}}</ref>

The deepest mine in Europe is the 16th shaft of the uranium mines in [[Příbram]], [[Czech Republic]], at {{convert|1838|m|ft}}.<ref name="DeepestEurope">{{cite news |title=Mineral deposits: from their origin to their environmental impacts |date = January 1995|url=https://books.google.com/books?id=o-WkCSk4jbkC&q=uranium+mines+in+P%C5%99%C3%ADbram+1838&pg=PA400 |publisher= Taylor & Francis|isbn = 9789054105503}}</ref> Second is [[Bergwerk Saar]] in [[Saarland]], [[Germany]], at {{convert|1750|m|ft}}. <!-- The third deepest mine in Europe is [[Pyhäsalmi Mine]] in [[Pyhäjärvi]], [[Finland]] at 1,444 meters. Příbram has another 2 mines under 1,600|meters... The fourth deepest mine in Europe is [[Boulby Mine]] [[England]] at 1,400|meters (shaft depth 1,100|meters). --><ref>{{Cite web |last= |date=1997-07-01 |title=Ensdorf |url=https://www.yumpu.com/de/document/view/6946024/maschinen-deilmann-haniel-shaft-sinking/7 |access-date=2025-03-22 |website=yumpu.com |language=de}}</ref>

The deepest open-pit mine in the world is [[Bingham Canyon Mine]] in [[Bingham Canyon]], [[Utah]], [[United States]], at over {{convert|1200|m|ft}}. The largest and second deepest open-pit copper mine in the world is [[Chuquicamata]] in northern [[Chile]] at {{convert|900|m|ft}}, which annually produces 443,000 tons of copper and 20,000 tons of molybdenum.<ref>{{cite web|title = Chuquicamata {{!}} MINING.com|url = http://www.mining.com/chuquicamata/|access-date = 2015-06-11|date = 2012-07-17|archive-date = 2019-03-28|archive-url = https://web.archive.org/web/20190328043745/http://www.mining.com/chuquicamata/|url-status = live}}</ref><ref>{{cite web|title=Chuquicamata's Life Underground Will Cost a Fortune, but is Likely to Pay Off for Codelco {{!}} Copper Investing News |url=http://copperinvestingnews.com/12788-chuquicamata-underground-mining-codelco-chile-open-pit.html |date=2015-04-06 |access-date=2015-06-11 |url-status=dead |archive-url=https://web.archive.org/web/20150406022110/http://copperinvestingnews.com/12788-chuquicamata-underground-mining-codelco-chile-open-pit.html |archive-date=April 6, 2015 }}</ref><ref>{{cite web|title = The TEX Report Ltd.|url = http://www.texreport.co.jp/xenglish/eng-genryou/201211/201211121319Mon-4.html|website = www.texreport.co.jp|access-date = 2015-06-11|archive-date = 2016-03-03|archive-url = https://web.archive.org/web/20160303214112/http://www.texreport.co.jp/xenglish/eng-genryou/201211/201211121319Mon-4.html|url-status = dead}}</ref> <!-- [[Escondida]] mine now has larger annual production -->

The deepest open-pit mine with respect to [[sea level]] is [[Tagebau Hambach]] in Germany, where the base of the pit is {{convert|299|m|ft}} below sea level.<ref>{{cite web|title=Nordrhein-Westfalen in Zahlen und Geodaten|url=https://www.bezreg-koeln.nrw.de/brk_internet/publikationen/abteilung07/pub_geobasis_nrw.pdf|access-date=2021-05-04|archive-date=2021-04-28|archive-url=https://web.archive.org/web/20210428084204/https://www.bezreg-koeln.nrw.de/brk_internet/publikationen/abteilung07/pub_geobasis_nrw.pdf|url-status=dead}}</ref>

The largest underground mine is [[Kiruna Mine|Kiirunavaara Mine]] in [[Kiruna]], [[Sweden]]. With {{convert|450|km|miles}} of roads, 40 million tonnes of annually produced ore, and a depth of {{convert|1270|m|ft}}, it is also one of the most modern underground mines. The deepest borehole in the world is [[Kola Superdeep Borehole]] at {{convert|12262|m|ft}}, but this is connected to [[scientific drilling]], not mining.<ref>{{cite web|last=Piesing|first=Mark|title=The deepest hole we have ever dug|url=https://www.bbc.com/future/article/20190503-the-deepest-hole-we-have-ever-dug|access-date=2021-05-04|website=www.bbc.com|date=6 May 2019 |language=en}}</ref>

==Metal reserves and recycling==
[[File:NatCopper.jpg|thumb|right|Macro of [[native copper]] about {{frac|1|1|2}} inches (4 cm) in size]]

[[File:Pyhasalmi mine.jpg|thumb|The [[Pyhäsalmi Mine]], a metal mine in [[Pyhäjärvi]], Finland]]

{{main|Landfill mining|Recycling}}
{{see also|Conflict resource|List of critical mineral raw materials}}

During the 20th century, the variety of [[metals]] used in society increased. Today, the development of major nations such as China and India and technological advances fuel an ever-greater demand. The result is that metal mining activities are expanding, and more and more of the world's metal stocks are above ground in use rather than below ground as unused reserves. An example is the in-use stock of [[copper]]. Between 1932 and 1999, copper in use in the US rose from {{convert|73|kg|lb}} to {{convert|238|kg|lb}} per person.<ref name="unep">[https://wayback.archive-it.org/all/20111223004208/http://www.unep.org/resourcepanel/Publications/MetalStocks/tabid/56054/Default.aspx ''The Recycling Rates of Metals: A Status Report''] 2010, [[International Resource Panel]], [[United Nations Environment Programme]]</ref>
[[File:Abandoned Metal Recycling Plant.png|thumb|left| A metal recycling plant in [[South Carolina]] that has been abandoned for years]]

95% of the energy used to make aluminium from [[bauxite]] ore is saved by using recycled material.<ref>[https://www.theguardian.com/environment/2008/feb/22/pledges.waste ''Tread lightly: Aluminium attack''] {{Webarchive|url=https://web.archive.org/web/20170510190347/https://www.theguardian.com/environment/2008/feb/22/pledges.waste |date=2017-05-10 }} Carolyn Fry, Guardian.co.uk, 22 February 2008.</ref> However, levels of metal recycling are generally low. In 2010, the [[International Resource Panel]], hosted by the [[United Nations Environment Programme]] (UNEP), published reports on metal stocks that exist within society<ref name="metal_stocks">[https://wayback.archive-it.org/all/20111223004208/http://www.unep.org/resourcepanel/Publications/MetalStocks/tabid/56054/Default.aspx ''Metal Stocks in Society: Scientific Synthesis''] 2010, [[International Resource Panel]], [[United Nations Environment Programme]]</ref> and their recycling rates.<ref name="unep" />

The report's authors observed that the metal stocks in society can serve as substantial anthropogenic mines above ground.<ref name="metal_stocks" /> However, they warned that the recycling rates of some rare metals used in applications such as mobile phones, battery packs for hybrid cars, and fuel cells are so low that unless future end-of-life recycling rates are dramatically stepped up these critical metals will become unavailable for use in modern technology.{{Citation needed|date=January 2021}}

As recycling rates are low and so much metal has already been extracted, some [[landfill]] now contain higher concentrations of metal than the mines themselves.<ref>{{cite web
 |title=Landfill mining: new opportunities ahead?
 |url=http://www.macfarlanes.com/media/1467/landfill-mining-new-opportunities-ahead.pdf
 |website=MacFarlanes
 |access-date=2015-06-11
 |archive-date=2015-06-13
 |archive-url=https://web.archive.org/web/20150613034513/http://www.macfarlanes.com/media/1467/landfill-mining-new-opportunities-ahead.pdf
 |url-status=dead
 }}</ref> This is especially true of [[Aluminium|aluminum]], used in cans, and [[precious metal]]s, found in discarded electronics.<ref>{{cite web|title = Landfill Mining|url = http://www.enviroalternatives.com/landfill.html|website = www.enviroalternatives.com|access-date = 2015-06-11|archive-date = 2017-05-23|archive-url = https://web.archive.org/web/20170523045629/http://www.enviroalternatives.com/landfill.html|url-status = live}}</ref> Furthermore, waste after 15 years has still not broken down, so less processing would be required when compared to mining ores. A study undertaken by [[Cranfield University]] has found £360&nbsp;million of metals could be mined from just four [[Landfill|landfill sites.]]<ref>{{cite web|title = Study shows around £360 million of metals could be mined from just four landfill sites|url = http://www.rebnews.com/news/resource_efficiency/study_shows_around_p360_million_metals_mined_just_four_landfill_sites.html|website = www.rebnews.com|access-date = 2015-06-11|archive-url = https://web.archive.org/web/20150612193519/http://www.rebnews.com/news/resource_efficiency/study_shows_around_p360_million_metals_mined_just_four_landfill_sites.html|archive-date = 2015-06-12|url-status=dead}}</ref> There is also up to 20&nbsp;MJ/kg of energy in waste, potentially making the re-extraction more profitable.<ref>{{cite web|title =Enhanced Landfill Mining: Material recovery, energy utilisation and economics in the EU (Directive) perspective |url=http://www.elfm.eu/Uploads/ELFM/FILE_79F81D49-34DC-4B5B-9BFC-5E5101CE7520.PDF |website=Enhanced Landfill Mining |access-date = 2015-06-11 |archive-url = https://web.archive.org/web/20150612103124/http://www.elfm.eu/Uploads/ELFM/FILE_79F81D49-34DC-4B5B-9BFC-5E5101CE7520.PDF|archive-date = 2015-06-12}}</ref> However, although the first landfill mine opened in [[Tel Aviv]], Israel in 1953, little work has followed due to the abundance of accessible ores.<ref>{{cite web|title = Assessing the opportunities of landfill mining|publisher = Research database – University of Groningen|url = https://www.rug.nl/research/portal/publications/pub(e2682e00-9881-4bac-ad4e-a4deb0dd4f1e).html|website = www.rug.nl|access-date = 2015-06-11|archive-date = 2019-01-27|archive-url = https://web.archive.org/web/20190127094229/https://www.rug.nl/research/portal/publications/pub(e2682e00-9881-4bac-ad4e-a4deb0dd4f1e).html|url-status = live}}</ref>

==See also==
{{columns-list|
* {{annotated link|Asteroid mining}}
* {{annotated link|Automated mining}}
* {{annotated link|Blood diamond}}
* {{annotated link|Conflict resource}}
* [[Deep sea mining]]
* {{annotated link|Environmental effects of mining}}
* {{annotated link|Extractive Industries Transparency Initiative}}
* {{annotated link|Geological engineering}}
* {{annotated link|Kimberley Process Certification Scheme}}
* {{annotated link|List of critical mineral raw materials}}
* {{annotated link|List of mining companies}}
* {{annotated link|Mining engineering}}
* {{annotated link|Outline of mining}}
* {{annotated link|Peak minerals}}
* {{annotated link|Resource curse}}
* {{annotated link|Resource extraction}}
* {{annotated link|Stone industry}}
}}

==References==
{{reflist}}

==Further reading==
* Woytinsky, W.S., and E.S. Woytinsky (1953). ''World Population and Production Trends and Outlooks'', pp.&nbsp;749–881; with many tables and maps on the worldwide mining industry in 1950, including coal, metals and minerals
* Ali, Saleem H. (2003). ''Mining, the Environment and Indigenous Development Conflicts''. Tucson AZ: University of Arizona Press. {{ISBN?}}
* Ali, Saleem H. (2009). ''Treasures of the Earth: need, greed and a sustainable future''. New Haven and London: Yale University Press. {{ISBN?}}
* {{cite book |title=From Mine to Mistress: Corporate Strategies and Government Policies in the International Diamond Industry |last=Even-Zohar |first=Chaim |year=2002 |publisher=Mining Journal Books |isbn=978-0-9537336-1-3 |page=555}}
* Geobacter Project: [https://web.archive.org/web/20170308175324/http://www.geobacter.org/press/2001-07-21-economist.pdf Gold mines may owe their origins to bacteria] (in [[Portable Document Format|PDF]] format)
* Garrett, Dennis. ''Alaska Placer Mining''. {{ISBN?}}
* {{cite book |title=Principles of Mine Planning|edition=2nd |last=Jayanta |first=Bhattacharya |year=2007 |publisher=Wide Publishing |isbn=978-81-7764-480-7 |page=505}}
* Morrison, Tom (1992). ''Hardrock Gold: a miner's tale''. {{ISBN|0-8061-2442-3}}
* John Milne. ''The Miner's Handbook: A Handy Reference on the subjects of Mineral Deposits (1894) Mining operations in the 19th century.'' [https://books.google.com/books?id=ty0LAQAAIAAJ&dq=waterways+john+milne&pg=PA95 The Miner's Handbook: A Handy Book of Reference on the Subjects of Mineral Deposits, Mining Operations, Ore Dressing, Etc. For the Use of Students and Others Interested in Mining Matters] {{Webarchive|url=https://web.archive.org/web/20231103190333/https://books.google.com/books?id=ty0LAQAAIAAJ&dq=waterways%20john%20milne&pg=PA95 |date=2023-11-03 }}.
* Aryee, B., Ntibery, B., Atorkui, E. (2003). "Trends in the small-scale mining of precious minerals in Ghana: a perspective on its environmental impact", ''Journal of Cleaner Production'' 11: 131–40.
* Temple, John (1972). ''[https://archive.org/details/miningjohntemple Mining: An International History]''. Ernest Benn Limited.
* The Oil, gas and Mining Sustainable Community Development Fund (2009). ''Social Mine Closure Strategy, Mali'' (in [https://web.archive.org/web/20111007165012/http://commdev.org/section/projects/sadiola CommDev: Projects: Social Mine Closure Strategy, Mali]).
* White F. (2020). ''Miner with a Heart of Gold: biography of a mineral science and engineering educator.'' Friesen Press, Victoria. ISBN 978-1-5255-7765-9 (Hardcover), 978-1-5255-7766-6 (Paperback), 978-1-5255-7767-3 (eBook).

==External links==
{{Wiktionary|mining}}
{{Commons category|Mining}}
{{wikiquote}}
{{Wikivoyage|Mining tourism}}
* [http://media.wiley.com/product_data/excerpt/11/04713485/0471348511.pdf First chapter] {{Webarchive|url=https://web.archive.org/web/20160415175613/http://media.wiley.com/product_data/excerpt/11/04713485/0471348511.pdf |date=2016-04-15 }} of [https://books.google.com/books?id=gi2sfYQIqPgC Introductory Mining Engineering] {{Webarchive|url=https://web.archive.org/web/20231103190331/https://books.google.com/books?id=gi2sfYQIqPgC |date=2023-11-03 }}
* [http://rmmlf.org/SciTech/Lacy/Introduction-to-Geology-and-Hard-Rock-Mining-2015.pdf An introduction to geology and hard rock mining] [https://web.archive.org/web/20160813182207/http://rmmlf.org/SciTech/Lacy/Introduction-to-Geology-and-Hard-Rock-Mining-2015.pdf (archived 13 August 2016)]
* {{Cite NIE|wstitle=Mining|short=x}}
* {{Cite EB1911|wstitle=Mining|volume=18 |pages=528–542|short=x |first=Henry Smith |last=Munroe}}

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