30 C.F.R. § 57.22608

Current through May 31, 2024
Section 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.

30 C.F.R. §57.22608