40 CFR 421.270 - Applicability: Description of the primary rare earth metals subcategory.
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The provisions of this subpart are applicable to discharges resulting from the production of rare earth metals and mischmetal by primary rare earth metals facilities processing rare earth metal oxides, chlorides, and fluorides.
Title 40 published on 2014-07-01.
No entries appear in the Federal Register after this date, for 40 CFR Part 421.