Pennsylvania Railroad class D7
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Class D7 (formerly Class A (anthracite), pre-1895) on the Pennsylvania Railroad was a class of 4-4-0Template:Whyte suffix steam locomotive.[1] Fifty-eight were built by the PRR's Altoona Works (now owned by Norfolk Southern) between 1882–1891 with Script error: No such module "convert". drivers, while sixty-one of class D7a were constructed with Script error: No such module "convert". drivers.[2]
The D7 was fundamentally an anthracite-burning version of the PRR D6, with a larger fire-grate in order to burn the slower-burning, harder coal.[3]
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