28. Precaution against dust, noxious gas, fumes and other impurities.- The employer of every belowground mine shall ensure that:-

(i) such steps as may be necessary are taken for minimising emissions of any gas, fume, vapor or dust which may enter the air at any workplace and for ensuring that the exposure of employees to respirable dust, gas, fume or vapor is limited to an extent that is reasonably practicable but, in any case, not exceeding the limits that are harmful to the health of employees.

(ii) no employee is required or allowed to enter any workplace or confined space until all practicable measures have been taken to remove any noxious gas, fume, vapors or dust, which may be present so as to bring their levels within the permissible limits.