99. The holder of a mining right or an operator who temporarily or permanently discontinues mining operations shall seal off or cover surface openings of shafts, raises, adits, declines or any other similar access to underground works, by means of reinforced concrete slabs or stone, sand or gravel backfill. He must however provide an opening equipped with a grate giving access to bats, if the situation justifies it.
Mine shafts shall be sealed off or covered in accordance with this Division, even if the head frame or shaft house is left in place.
O.C. 1042-2000, s. 99; O.C. 1065-2015, s. 38.