(a) Methane detectors used for examining in coal mines shall be permissible. When not in use, they shall be in the care of certified officials or other competent designated persons, who shall examine, clean, and deliver them in a safe condition to their users before they enter the mine.
(b) Permissible methane detectors shall be entrusted for use only to certified persons or to approved competent persons who have been accredited as users of methane detectors.
(c) An individual knowing his methane detector to be injured or defective shall immediately report its condition to his supervisor, mine foreman, or to the designated attendant.
Last modified: May 3, 2021