S-2.1, r. 14 - Regulation respecting occupational health and safety in mines

Full text
172. Where a release of methane is detected, and its concentration is unknown:
(1)  all sources of ignition shall be eliminated;
(2)  electrical equipment shall be disconnected;
(3)  the premises affected shall be evacuated except for the worker responsible for measuring the concentration of methane.
O.C. 213-93, s. 172.