|Commodity||Short tons||Percent of total|
|Sand, gravel, shells, clay, salt, and slag||3,879,722||36.2|
|Food and food products||3,347,063||31.2|
|Iron ore, iron, and steel waste and scrap||526,313||4.9|
|Primary metal products||63,418||0.6|
|Chemicals excluding fertilizers||55,891||0.5|
|Primary nonmetal products||4,059||0.0|
|Unknown and not elsewhere classified products2||1,912,116||17.8|
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.iwr.usace.army.mil/ as of Oct. 30, 2001.