|Commodity||Short tons||Percent of total|
|Sand, gravel, shells, clay, salt, and slag||2,458,465||35.6|
|Iron ore, iron, and steel waste and scrap||1,449,806||21.0|
|Primary metal products||1,277,702||18.5|
|Food and food products||156,950||2.3|
|Chemicals excluding fertilizers||91,230||1.3|
|Coal, lignite, and coal coke||29,217||0.4|
|Non-ferrous ores and scrap||19,000||0.3|
|Unknown and not elsewhere classified products2||759,068||11.0|
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.