Boxcar, 50 Foot, FMC, 5283

History: In the 1970's with the growth of the Per Diem business model, FMC produced a series of 50 foot box cars in different configurations. The double-sliding-door configuration is one common variation that was used by many different railroads. FMC provided a large number of box cars for SSI, Itel, Brae, and Rex. Due to the economic recession which began in late 1979, most these cars were soon transferred to other railroads one or more times. By the 1990s, most had been acquired by GE. They continued to change hands nearly every time a lease expired, or they were rebuilt. The renumberings of GE owned cars are often very complex, but some of the most commonly seen reporting marks are EEC, HS, and SRN.

The XM-class, 50-foot, double door, 5283 cubic foot capacity boxcars, were one of the later variations in this series. Records show that some (but likely not all) were built between May and June 1977 by FMC in Portland, OR.

Railroad/Company: FMC Corporation is an American chemical manufacturing company headquartered in Philadelphia, Pennsylvania. The company was originally founded by chemist John Bean in 1883 as the Bean Spray Pump Company in Los Gatos, California, producing piston pumps for insecticides. In 1928, Bean Spray Pump purchased two companies: the Anderson-Barngrover Co. and Sprague-Sells Co. At this time the company changed its name to Food Machinery Corporation, and began using the initials FMC.

In 1941 the company FMC received a contract to design and build amphibious landing vehicles tracked vehicles for the United States War Department, and afterwards the company continued to diversify its products, including an extensive line of rail cars. The rail car production really kicked into high gear during the 1970s when FMC produced many models to take advantage of the Per Diem rules. Between 1965 and 1985 FMC was the owner of the Gunderson metal works in Springfield, Oregon, during that period it was known as the "Marine and Rail Equipment Division of FMC" (MRED), it was sold in 1985 to The Greenbrier Companies.
FMC employs 7,000 people worldwide, and had gross revenues of US$2.8 billion in 2017

From Wikipedia