HAZMAT Table 2a,,,,,,,,,,,,
"Hazardous Material Shipment Characteristics by Hazard Class: 2002
",,,,,,,,,,,,
"[Estimates are based on data from the 2002 Commodity Flow Survey. Because of rounding, estimates may not be additive]
",,,,,,,,,,,,
Hazard class and description,Value,,Tons,,Ton-miles,,"Average miles 
per shipment",,,,,
,"2002 
(million $)",Percent,"2002 
(thousands)",Percent,"2002 
(millions)",Percent,,,,,,
Total," 660,181 ", 100.0 ," 2,191,519 ", 100.0 ," 326,727 ", 100.0 , 136 ,,,,,
"Class 1, Explosives"," 7,901 ", 1.2 ," 5,000 ", 0.2 ," 1,568 ", 0.5 , 651 ,,,,,
"Class 2, Gases"," 73,932 ", 11.2 ," 213,358 ", 9.7 ," 37,262 ", 11.4 , 95 ,,,,,
"Class 3, Flammable liquids"," 490,238 ", 74.3 ," 1,788,986 ", 81.6 ," 218,574 ", 66.9 , 106 ,,,,,
"Class 4, Flammable solids"," 6,566 ", 1.0 ," 11,300 ", 0.5 ," 4,391 ", 1.3 , 158 ,,,,,
"Class 5, Oxidizers and organic peroxides"," 5,471 ", 0.8 ," 12,670 ", 0.6 ," 4,221 ", 1.3 , 407 ,,,,,
"Class 6, Toxic (poison)"," 8,275 ", 1.3 ," 8,459 ", 0.4 ," 4,254 ", 1.3 , 626 ,,,,,
"Class 7, Radioactive materials"," 5,850 ", 0.9 , 57 ,    —  , 44 ,    —  , S ,,,,,
"Class 8, Corrosive materials"," 38,324 ", 5.8 ," 90,671 ", 4.1 ," 36,260 ", 11.1 , 301 ,,,,,
"Class 9, Miscellaneous dangerous goods"," 23,625 ", 3.6 ," 61,018 ", 2.8 ," 20,153 ", 6.2 , 368 ,,,,,
"
KEY: 
— Represents and 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.",,,,,,,,,,,,
"SOURCE:  Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Hazmat Data, December 2004.",,,,,,,