These 100-ton three bay covered hoppers with coal loads are painted black with white logo and lettering. They were built by Greenville Steel Car in February of 1979 and run on Barber Roller Bearing trucks. The cars in this series were leased from PLM Inc. and intended to be used for service to a Sierra Pacific power plant, then under construction. The ends were painted either white or, as in this case, blue. The blue identifies the end of the car with a swivel coupler; this allows the cars to be emptied using an in-train rotary dumper