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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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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.
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