REC002-4003

Where gas exists, and no provisions are made for its constant removal, no shots should be fired, and, where permitted in a gassy mine, shots should be fired only by a man specially appointed, and at such hours when the miners are not within the mine. All shots should be tamped by stone well damped, and only copper or wooden tools should be employed. As far as possible the use of explosives should be discouraged, and skilful mining encouraged. Danger-boards should be placed further from the faces whence gas issues (say), where practicable, 50 yards.