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U.S. Hazardous Materials Shipments by Transportation Mode, 2007

Notes: 

Numbers may not add to totals due to rounding.

Description: 

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

a Truck as a single mode includes shipments that went by private truck only, for-hire truck only, or a combination of both.

b Private truck refers to a truck operated by a temporary or permanent employee of an establishment or the buyer/receiver of the shipment.

c Excludes most shipments of crude oil.  See previous table for the estimated amount of crude oil and petroleum products transported in the United States.

Source: 

U.S. Department of Transportation, Bureau of Transportation Statistics,  U.S. Department of Commerce, Census Bureau, 2012 Commodity Flow Survey, Hazardous Materials (Washington, DC: December 2009), table CF0700H01, available at http://factfinder.census.gov/faces/nav/jsf/pages/searchresults.xhtml?ref... of Dec. 9, 2014.