|Commodity||Short tons||Percent of total|
|Chemicals excluding fertilizers||3,819,806||5.8|
|Sand, gravel, shells, clay, salt, and slag||304,549||0.5|
|Primary nonmetal products||178,118||0.3|
|Food and food products||96,350||0.1|
|Primary metal products||25,347||<0.1|
|Unknown and not elsewhere classified products2||16,597,383||25.4|
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.