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Code · CFR · Title 30 — Mineral Resources · Part 57 · § 57.22223

§ 57.22223. Crosscuts before abandonment (III mines).

25 words·~1 min read·/us/cfr/t30/s§ 57.22223·

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A means of ventilating faces shall be provided before workings are abandoned in unsealed areas, unless crosscuts are provided within 30 feet of the face.
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