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U.S. Hazardous Materials Shipments by Hazard Class, 2007

Notes: 

Numbers may not add to totals due to rounding.

Description: 

KEY: U = data are not available or less than 1 unit of measure or rounds to zero; S = data were not published because of high sampling variability or other reasons.

Source: 

U.S. Department of Transportation, Bureau of Transportation Statistics, and U.S. Department of Commerce, Census Bureau, 2012 Commodity Flow Survey, American Fact Finder, Hazardous Materials (Washington, DC:  December 2014), table CF1200H02, available at http://www.census.gov/svsd/www/cfsmain.html as of Dec. 9, 2014.