|Commodity||Short tons||Percent of total|
|Coal, lignite, and coal coke||16,006,028||39.2|
|Sand, gravel, shells, clay, salt, and slag||7,891,352||19.3|
|Unknown and not elsewhere classified products2||2,893,468||7.1|
|Chemicals excluding fertilizers||1,343,373||3.3|
|Primary metal products||1,317,004||3.2|
|Non-ferrous ores and scrap||951,994||2.3|
|Iron ore, iron, and steel waste and scrap||810,353||2.0|
|Primary nonmetal products||423,497||1.0|
|Food and food products||355,955||0.9|
1 Domestic includes intrastate shipments.
2 To protect confidentiality, if three or more vessel operating companies do not carry a particular commodity from a state of origin to a state of destination, then that commodity is reclassified to "unknown and not elsewhere classified products."
SOURCE FOR DATA ON THIS PAGE: U.S. Army Corps of Engineers, Waterborne Commerce Statistics Center, State to State and Region to Region Commodity Tonnages, Public Domain database, available at http://www.wrsc.usace.army.mil/ndc/datapdom.htm as of Oct. 30, 2001.