HAZMAT Table 15a ,,,,,,
"Hazardous Material Shipment Characteristics for Packing Group I: 2002
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"[Estimates are based on data from the 2002 Commodity Flow Survey. Because of rounding, estimates may not be additive]
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Description,Value,,Tons,,Ton-miles,
,"2002 
(million $)",Percent,"2002 
(thousands)",Percent,"2002 
(millions)",Percent
Total,"660,181",100.0,"2,191,519",100.0,"326,727",100.0
Packing Group I,"177,392",26.9,"577,058",26.3,"80,162",24.5
"
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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"
NOTE:
Note: Packing Groups I, II, and III reflect the level of hazard associated with the material being shipped. Packing Group I is the most rigorous.",,,,,,
"
SOURCE:
Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Hazmat Data, December 2004.      
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