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Regulations last checked for updates: May 23, 2025
Title 30 - Mineral Resources last revised: Apr 14, 2025
All Titles
Title 30
Chapter I
Part 27
Subpart B - Subpart B—Construction and Design Requirements
§ 27.20 - Quality of material, workmanship, and design.
§ 27.21 - Methane-monitoring system.
§ 27.22 - Methane detector component.
§ 27.23 - Automatic warning device.
§ 27.24 - Power-shutoff component.
authority:
30 U.S.C. 957
,
961
source:
31 FR 10607, Aug. 9, 1966, unless otherwise noted.
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