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30 CFR 57.22217

§ 57.22217 Seals and stoppings (I-A, I-B, and I-C mines).

United States · 30 CFR — Mineral Resources · Status: effective

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30 CFR 57.22217, § 57.22217 Seals and stoppings (I-A, I-B, and I-C mines), United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/133243
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Full text

All seals, and those stoppings that separate main intake from main return airways, shall be of substantial construction and constructed of noncombustible materials, except that stoppings constructed of brattice materials may be used in face areas.

Legislative history

This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.