Code of Federal Regulations · Section
§ 440.40 — Applicability; Description Of The Mercury Ore Subcategory
40 C.F.R. § 440.40
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The provisions of subpart D are applicable to discharges from (a) mines, either open-pit or underground, that produce mercury ores; and (b) mills beneficiating mercury ores by gravity separation methods or by froth-flotation methods.
Authorizing Statute
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Effluent limitations33 U.S.C. § 1311