In the 1950s Pullman-Standard began offering new standard designs for their coal hoppers. One of these was the 70-ton three bay coal hopper with a rated volume of 2,750 cubic feet. The carbody had sixteen side posts and was available with and without heap shields. Later an 80-ton version was offered using the same length frame but having a taller body with a rated volume of 2,960 cubic feet. The cars were built from 1954-1960 (2750 cf) and 1964-1971 (2960 cf).
