In 1979, Greenville Steel Car Company introduced the 3242 cubic foot capacity, 65'-6" mill gondola. Three railroads purchased the car originally, and of the 750 total cars built, 500 went to the Missouri Pacific. Per the other railroads, Chicago and North Western received 150 cars, and Southern Pacific received 100 cars.
 
Precision micro-tooled models feature factory installed Kadee #58 coupler, narrow-style draft box, featuring: shank wedges, striker casting and full nut and bolt detail, ASF 100 ton Ride Control trucks, CNC-machined metal wheel sets with metal axles, wire grab irons and brake rods, razor sharp painting and printing and wire coupler cut levers and separately applied air hoses.