|Commodity||Short tons||Percent of total|
|Coal, lignite, and coal coke||16,741,788||60.8|
|Sand, gravel, shells, clay, salt, and slag||4,936,719||17.9|
|Chemicals excluding fertilizers||711,416||2.6|
|Primary nonmetal products||341,542||1.2|
|Primary metal products||328,123||1.2|
|Iron ore, iron, and steel waste and scrap||199,652||0.7|
|Non-ferrous ores and scrap||39,320||0.1|
|Unknown and not elsewhere classified products2||2,275,847||8.3|
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.