43 CFR 3594.2
§ 3594.2 Support pillars.
United States · 43 CFR — Public Lands: Interior · Status: effective
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- Citation
- 43 CFR 3594.2, § 3594.2 Support pillars, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/213447
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Full text
Sufficient pillars shall be left during first mining to ensure the ultimate maximum recovery of mineral deposits prior to abandonment. All boundary pillars shall be 50 feet thick unless otherwise specified in writing by the authorized officer. Boundary and other main pillars shall be mined only with the written consent or by order of the authorized officer.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.