(Millions of metric tons)
|Mode of transportation||Total|
|Machinery, excluding electricals||0.46|
|Chemicals or allied products||0.32|
|Electrical machinery, equipment or supplies||0.25|
|Instruments, photographic and optical goods, watches or clocks||0.09|
|Petroleum or coal products||123.6|
|Chemicals or allied products||118.2|
|Petroleum or coal products||900.6|
|Food or kindred products||674.2|
|Lumber or wood products, excluding furniture||529.0|
|Chemicals or allied products||281.7|
|Petroleum and petroleum products||844.2|
|Food and farm products||244.3|
|Chemicals and related products||119.4|
|Intermodal (road and rail combination)|
|Chemicals or allied products||1.9|
|Food or kindred products||1.7|
|Lumber or wood products, excluding furniture||1.5|
|Pulp, paper or allied products||1.4|
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).