U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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All TitlesTitle 46Chapter IPart 148Subpart E - Subpart E—Special Requirements for Certain Materials
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(a) This part does not apply to the transport of natural magnesite, magnesium carbonate, or magnesia clinkers.
(b) When transported by barge, unslaked magnesia must be carried in an unmanned, all-steel, double-hulled barge equipped with weathertight hatches or covers. The barge may not carry any other cargo while unslaked magnesia is on board.
(c) The shipping paper requirements in § 148.60 of this part and the dangerous cargo manifest requirements in § 148.70 of this part do not apply to unslaked magnesia transported under the requirements of paragraph (b) of this section.
