HAZMAT Table 11c ,,,,,,,,
"Hazardous Material Shipment Characteristics by Selected Commodities: Percent of Total for 2002 and 1997
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"[Estimates are based on data from the 2002 and 1997 Commodity Flow Surveys. Because of rounding, estimates may not be additive]
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SCTG Code (1),Commodity Description,Value (percent),,Tons (percent),,Ton–miles (percent),,
,,2002,1997,2002,1997,2002,1997,
—,Total,100.0,100.0,100.0,100.0,100.0,100.0,
17,Gasoline and aviation turbine fuel,42.3,41.4,48.5,48.9,35.9,34.6,
18,Fuel oils,17.6,17.7,25.1,26.6,17.0,16.4,
19,"Coal and petroleum products, n.e.c.",6.3,6.1,9.1,8.8,12.5,10.0,
20,Basic chemicals,12.7,15.9,12.5,11.5,22.2,28.4,
22,Fertilizers,0.8,1.0,1.3,1.4,2.6,3.3,
23,"Chemical products and preparations, n.e.c.",8.0,7.0,1.6,1.1,4.4,2.9,
—,All other SCTG codes,12.1,11.0,2.0,1.7,5.5,4.3,
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KEY: 
— Represents an estimate equal to zero or less than 1 unit of measure.
S Estimate does not meet publication standards because of highly sampling variability or poor response quality.",,,,,,,,
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(1) SCTG codes were selected based on estimated tons without regard to sampling variability.",,,,,,,,
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NOTE: Percentages represent the proportion of hazardous materials to the two digit commodity total.",,,,,,,,
"SOURCE: Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Hazmat Data, December 2004.",,,,,,,,