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Code · CFR · Title 30 — Mineral Resources · Part 57 · § 57.22607

§ 57.22607. Blasting on shift (III mines).

33 words·~1 min read·/us/cfr/t30/s§ 57.22607·

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When blasting on shift, tests for methane shall be made in the mine atmosphere by a competent person before blasting. Blasting shall not be done when 1.0 percent or more methane is present.
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