HAZMAT Table 14a,,,,,,
"Hazardous Material Shipment Characteristics for Toxic by Inhalation (TIH): 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
Toxic by Inhalation,"6,947",1.1,"25,806",1.2,"6,404",2.0
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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.     ",,,,,,
"
NOTE:
Toxic by inhalation (TIH) gases and volatile liquids that are toxic when inhaled.",,,,,,
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SOURCE:
Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Hazmat Data, December 2004.      
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