97. Local exhaust ventilation for trapping dust emitted by a specific source is not required where the emission of dust is controlled by a system of humidification meeting the standards of Schedule I to the Regulation respecting occupational health and safety (chapter S-2.1, r. 13).
O.C. 213-93, s. 97; O.C. 1326-95, s. 21; O.C. 885-2001, s. 383.