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Code · CFR · Title 30 — Mineral Resources · Part 57 · § 57.22104

§ 57.22104. Open flames (I-C mines).

70 words·~1 min read·/us/cfr/t30/s§ 57.22104·

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(a)Open flames, including cutting and welding, shall not be used underground.
(b)Welding and cutting shall not be done within 50 feet of a mine opening unless all persons are out of the mine and the mine opening is covered. The cover shall be a substantial material, such as metal or wood, topped with a layer of wetted material to prevent sparks and flames from entering the mine opening.
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