(a) Faces and muck piles shall be examined for misfires after each blasting
(b) Only work necessary to remove a misfire and protect the safety of miners
engaged in the removal shall be permitted in the affected area until the
misfire is disposed of in a safe manner.
(c) When a misfire cannot be disposed of safely, each approach to the area
affected by the misfire shall be posted with a warning sign at a conspicuous
location to prohibit entry, and the condition shall be reported immediately to
(d) Misfires occurring during the shift shall be reported to mine management
not later than the end of the shift.
U.S. Department of Labor | Mine Safety and Health Administration (MSHA) | 1100 Wilson Boulevard, 21st Floor | Arlington, VA 22209-3939 www.msha.gov | Telephone: (202) 693-9400 | Fax-on-demand: (202) 693-9401