TABLE 24 Average Loaded U.S. Railcar Weight for Selected Commodities: 1991 and 2001,,,,,,,, (Tons per carload),,,,,,,, ,,,,,,,, ,1991,2001,,,,,, Farm products, 90 , 94 ,,,,,, Coal, 99 , 110 ,,,,,, Nonmetallic minerals, 92 , 96 ,,,,,, Food and kindred products, 63 , 68 ,,,,,, Chemicals and allied products, 81 , 84 ,,,,,, Transportation equipment, 21 , 21 ,,,,,, Miscellaneous mixed shipments, 17 , 15 ,,,,,, " NOTE: Miscellaneous mixed shipments is mostly intermodal traffic. Some intermodal traffic is included in commodity-specific categories, as well.",,,,,,,, "SOURCES: Association of American Railroads, Railroad Facts (Washington, DC: 2001 and 2002 issues). 1991 data—U.S. Department of Transportation, Bureau of Transportation Statistics, calculations based on Association of American Railroads, Railroad Ten-Year Trends 1990–1999 (Washington, DC: 2000).",,,,,,,,