(Millions of U.S. short tons)
|Mode of transportation||Total|
|Machinery, excluding electricals||0.51|
|Chemicals or allied products||0.36|
|Electrical machinery, equipment or supplies||0.28|
|Instruments, photographic and optical goods, watches or clocks||0.10|
|Petroleum or coal products||136.2|
|Chemicals or allied products||130.3|
|Petroleum or coal products||992.7|
|Food or kindred products||743.2|
|Lumber or wood products, excluding furniture||583.1|
|Chemicals or allied products||310.5|
|Petroleum and petroleum products||930.6|
|Food and farm products||269.3|
|Chemicals and related products||131.6|
|Intermodal (road and rail combination)|
|Chemicals or allied products||2.1|
|Food or kindred products||1.9|
|Lumber or wood products, excluding furniture||1.7|
|Pulp, paper or allied products||1.6|
Air, road and rail: U.S. Department of Commerce. U.S. Census Bureau. 1993 Commodity Flow Survey. Special tabulation. (Washington, DC: 1998).
Pipeline: U.S. Department of Transportation. Bureau of Transportation Statistics. Special tabulation. (Washington, DC: 1998).
Water transport: U.S. Army Corps of Engineers (USACE). Waterborne Commerce of the United States, Calendar Year 1996; Part 5 -National Summaries. (New Orleans, LA: 1997).