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12 Compress bandages adequate alternating current apparatus approved blaster blasting blasting caps blocking cars bucket cable sheaves cage Caisson Carbon dioxide Carbon monoxide charge circuit breakers closet competent person connection construction Constructor conveyance detonators devices difference of potential direct current duty effectively grounded employed employees engine room equipment excavation exceed explosives factor of safety firing fuse galvanometer gases gauze roller bandages high voltage hoisting engineers hoisting or lowering holes Hydrogen sulphide inches inflammable material inspected installed insulating material Iodine ladder lamps less lights lock locomotive metallic covering misfires motors necessary non-combustible permitted places properly protected rheostats rope or cable safe safety miner shaft or tunnel Sheathing skip STANDARD sufficient suitable superintendent Supply shall mean switch switchboard Tannic Acid therein timbers trolley wires tunnel foreman TUNNELS AND SUBWAYS twenty 20 underground ventilation volts workmen yard tails yards Z. O. Adhesive Z. O. Adhesive sterilized