Regulation respecting silica - made under the Occupational Health and Safety Act Repealed! Jurisdiction Canada - Ontario Year 1983 Published in English Source Ontario Ministry of Labour, Occupational Health and Safety Division, 400 University Ave., Toronto, Ontario M7A 1T7, Canada, 1983. 51p. Descriptors [Primary] Canada, Ontario, respirable dust, silica, threshold limit values [Secondary] law, medical supervision, replaced, respirators, sampling and analysis Subject category Chemical safety Abstract This regulation presented in booklet form includes: the regulation proper, setting the exposure limit for silica at 0.10mg/m3 (TWA) with a ceiling value of 0.20mg/m3; a code for respiratory equipment for silica; a code for measuring airborne silica; a code of medical surveillance. CIS No. 85-52 Database ID 43339