Protection of dangerous openings where operations suspended

(1) Where a mine has suspended operations, the manager shall cause the entrances to underground workings and all other pits and openings that are dangerous by reason of their depth or otherwise to be protected against inadvertent access, to the satisfaction of the Inspector. chemicals and (2) Unless exempted by the Inspector, all explosives, chemicals and reagents, fuel and other hazardous material shall be returned to the supplier or disposed of in accordance with proper international standards and procedures.