Pennsylvania Railroad class C1

The PRR C1 was the Pennsylvania Railroad's class of steam locomotive, used in switching service. The locomotive type was built at the railroad's Juniata shops in Altoona, Pennsylvania and introduced in 1925.
The 0-8-0 was common on most railroads, but not on PRR; when the railroad needed larger motive power, they used the 2-8-0 "Consolidation". The PRR wanted the best motive power for switching duties at rail yards and interchanges, and the C1 class was the heaviest two-cylinder 0-8-0 switcher ever produced. Calculated tractive effort was 76,154 lb, based on 78% MEP with 60% maximum cutoff. All C1s were withdrawn and scrapped between 1948 and 1953.