1. LawStack
  2. Title 30 - Mineral Resources
  3. Chapter I - Mine Safety and Health Administration, Department of Labor
  4. Subchapter K - Metal and Nonmetal Mine Safety and Health
  5. Part 57 - Safety and Health Standards—Underground Metal and Nonmetal Mines
  6. Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines
  7. Subject Group - Explosives
  8. 30 CFR § 57.22608
30 CFR § 57.22608
Secondary blasting (I-A, II-A, and V-A mines)
May 28, 2026
CFR

§ 57.22608 Secondary blasting (I-A, II-A, and V-A mines).

Prior to secondary blasting, tests for methane shall be made in the mine atmosphere at blast sites by a competent person. Secondary blasting shall not be done when 0.5 percent or more methane is present.

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§ 57.22607 Blasting on shift (III mines)
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Appendix Appendix I to Subpart T of Part 57 Standard Applicability by Category or Subcategory

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