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S-2.1, r. 4 - Safety Code for the construction industry
Section 3.25.4
Disposition versions
3.25.4. Measures to control exposure to crystalline silica: Where work involving a material presumed to contain or containing crystalline silica is liable to produce dust emissions, the employer must implement at least one of the following control measures:
(a) the use of a local exhaust ventilation system equipped with a high-efficiency filter;
(b) the use of a procedure to wet the dust emissions;
(c) the isolation of workers from the source of the dust emissions;
(d) the confinement of the source of the dust emissions so that workers are not exposed.
The equipment used to control dust must be used and cared for in accordance with the manufacturer’s instructions or a standard offering equivalent safety.
