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[Header] PHMSA - U.S. Department of Transportation - Pipeline and Hazardous materials Safety Adminis
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Forbidden
General Term
A material that is prohibited from being offered or accepted for transportation. This prohibition does not apply if these materials are:
Additional Info/Example:

• diluted, stabilized, or incorporated into devices
and
• classed in accordance with Part 173. (See § 172.101(d)(1)).
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