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

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108.1. A miner’s lamp used underground shall yield a level of illumination of at least 1500 lux at 1.2 m (4 ft) from the light source.
Notwithstanding the foregoing, if the ground to be evaluated is more than 3.6 m (12 ft) from the miner’s lamp, auxiliary lighting shall also be installed.
O.C. 782-97, s. 18.