Acts and Regulations

96-105 - Underground Mine

Section 47
Disposition versions

Full text
Air quality requirements
47An employer shall ensure that the air to which an employee is exposed meets the following requirements:
(a) the air contains not less than 19.5 per cent and not more than 23 per cent by volume of oxygen; and
(b) the air is of sufficient volume to prevent
(i) exposure of the employee to a level of concentration of an air contaminant or mixture of air contaminants in excess of the occupational exposure limit,
(ii) where there is no occupational exposure limit, exposure of the employee to a level of concentration of an air contaminant or mixture of air contaminants that the employer knows or ought reasonably to know constitutes a hazard to the health or safety of the employee, and
(iii) exposure of the employee to a level of concentration of an air contaminant or mixture of air contaminants in excess of fifty per cent of the lower explosive limit of the air contaminant or mixture of air contaminants.
2022-27
Air quality requirements
47An employer shall ensure that the air to which an employee is exposed meets the following requirements:
(a) the air contains not less than 19.5 per cent and not more than 23 per cent by volume of oxygen; and
(b) the air is of sufficient volume to prevent
(i) exposure of the employee to a level of concentration of an air contaminant or mixture of air contaminants in excess of the threshold limit values,
(ii) where there is no threshold limit value, exposure of the employee to a level of concentration of an air contaminant or mixture of air contaminants that the employer knows or ought reasonably to know constitutes a hazard to the health or safety of the employee, and
(iii) exposure of the employee to a level of concentration of an air contaminant or mixture of air contaminants in excess of fifty per cent of the lower explosive limit of the air contaminant or mixture of air contaminants.