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Code · CFR · Title 30 — Mineral Resources · Part 75 · § 75.1106

§ 75.1106. Welding, cutting, or soldering with arc or flame underground.

121 words·~1 min read·/us/cfr/t30/s§ 75.1106·

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\[Statutory Provisions\] All welding, cutting, or soldering with arc or flame in all underground areas of a coal mine shall, whenever practicable, be conducted in fireproof enclosures. Welding, cutting, or soldering with arc or flame in other than a fireproof enclosure shall be done under the supervision of a qualified person who shall make a diligent search for fire during and after such operations and shall, immediately before and during such operations, continuously test for methane with means approved by the Secretary for detecting methane.
Welding, cutting, or soldering shall not be conducted in air that contains 1.0 volume per centum or more of methane. Rock dust or suitable fire extinguishers shall be immediately available during such welding, cutting or soldering.
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