PART XXIX UNDERGROUND OPERATIONS — Auxiliary fans
586
(1) An employer shall ensure that a heading that is advanced more than 10 metres from the main ventilation circuit and a raise or subdrift that is more than 10 metres from the main ventilation circuit has an auxiliary ventilation system, or a system of line brattices, to direct ventilation so that the face of the heading is swept by the ventilating air supply.
586(2)
The distance referred to in subsection (1) shall be measured from the nearest rib.
Not legal advice. Verify the cited article against the signed agreement.