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

Full text
477. The control devices shall be padlocked in the open position to prevent the electrical equipment from being energized while work is being done on it. The padlocks shall be placed and removed only by the persons carrying out the work on the electrical equipment and each person working on it shall install his own personal padlock.
The tags warning that work is being done on the electrical equipment that could come into contact with energized equipment shall be made of insulating material.
O.C. 213-93, s. 477.