1. Regulations
  2. title 30
  3. chapter I
  4. part 57
  5. subpart T
  6. subjgrp 210
  7. § 57.22608

View all text of Subjgrp 210 [§ 57.22601 - § 57.22608]

§ 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.

AUTHORITY: 30 U.S.C. 811.

SOURCE: 50 FR 4082, Jan. 29, 1985, unless otherwise noted.

CITE AS: 30 CFR 57.22608