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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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Title 43
Chapter II
Part 3590
Subpart 3594 - Subpart 3594—Mining Methods
§ 3594.1 - Ultimate maximum recovery.
§ 3594.2 - Support pillars.
§ 3594.3 - Boundary pillars and isolated blocks.
§ 3594.4 - Development on leased lands through adjoining mines as part of a mining unit.
§ 3594.5 - Minerals soluble in water; brines; minerals taken in solution.
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