19. (Replaced, O.C. 501-2011)Transfer and free fall: In the case where the transfer or free fall of materials of any kind including aggregates, mine rejects ore, ore concentrate or pellets, brings about the emission of dust which can be seen in the atmosphere more than 2 metres away from the emission source, the person responsible for that source of atmospheric contamination must take the necessary measures so that:(a) the stationary transfer point is included in an enclosed space equipped with ducts which draw dust to a dust collector so that the emissions of particulate matters into the atmosphere are in compliance with the concentration standard established in section 25; or
(b) the free fall height of these materials does not exceed 2 metres.