S-2.1, r. 4 - Safety Code for the construction industry

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8.3.10. A warning system shall be set up to warn operators to stop the motor of the self-propelled vehicle and to prohibit the firing of explosives in case the ventilation system should break down.
R.R.Q., 1981, c. S-2.1, r. 6, s. 8.3.10.