Table 14b. Hazardous Material Shipment Characteristics for Toxic by Inhalation (TIH): Percent of Total for 2002 and 1997

Table 14b. Hazardous Material Shipment Characteristics for Toxic by Inhalation (TIH): Percent of Total for 2002 and 1997

[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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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
Toxic by Inhalation 1.1 1.4 1.2 1.3 2.0 3.5

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.

NOTE:
Toxic by inhalation (TIH) gases and volatile liquids that are toxic when inhaled.

SOURCE:
Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Hazmat Data, December 2004.