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

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103.2. Any underground equipment powered by a diesel engine shall be stopped if the following occurs:
(1)  the concentration of carbon monoxide in the undiluted exhaust gases of the engine exceeds 750 ppm for haulage, clearing or service equipment;
(2)  its use becomes dangerous due to a defect in the engine.
O.C. 1236-98, s. 11; O.C. 119-2006, s. 9.