40 CFR 436.190 - Applicability; description of the Frasch sulfur subcategory.
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The provisions of this subpart are applicable to the processing of sulfur on shore and in marshes and estuaries by the Frasch process. Not covered are sulfur refining operations that are not performed at the mining and collection site.
Title 40 published on 2013-07-01
no entries appear in the Federal Register after this date.