|Commodity||Short tons||Percent of total|
|Sand, gravel, shells, clay, salt, and slag||3,982,766||10.5|
|Chemicals excluding fertilizers||1,149,472||3.0|
|Coal, lignite, and coal coke||256,985||0.7|
|Lumber, logs, wood chips, and pulp||3,291||<0.1|
|Unknown and not elsewhere classified products2||4,666,011||12.3|
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.