[=Shall prop roof, etc.=] Each miner, or other person employed in a mine, shall securely prop the roof of the working place therein under his control, and shall obey any order, or orders, given by the superintendent or mine-foreman relating to the width of working places, and to the security of the mine in the part thereof where he is at work, and for fifteen feet back from the face of his working place. Such miner, or other person, shall not be held to have violated the provisions of this clause if the owner, lessee or agent fails to supply the necessary props, caps, and timbers, as provided for in this act. (Sec. 933, 953.) [=Shall not waste props, etc.=] Each miner, or other person shall avoid waste of props, caps, timber, or other material. When he has props, caps, timber, or other material unsuited for his purpose, he shall not cover up or destroy same, but shall place it near the track where it can be readily seen. (Sec. 933, 953.) [=Blasting when fire-damp is generating.=] He shall not fire a blast in any working place which is likely to generate sudden volumes of fire-damp, or where locked safety lamps are used, except with the consent of the mine-foreman, or other competent person designated by the mine-foreman for that purpose. (Sec. 962.) [=Blasting when restricted to specific times.=] At a mine where the firing of shots is restricted to specific times, no miner shall fire a shot until the time appointed for him to do so, and then only in such rotation as designated. (Sec. 962.) [=Examination after blasting.=] After each blast, he shall exercise great care in examining the roof and coal, and shall secure them safely before beginning to load coal. (Sec. 962.) [=Shall post after undermining.=] After the coal is undermined, he shall, before shooting the coal, properly post the roof of his working place. [=Must not go under draw-slate.=] When draw-slate is over the coal, he shall not go underneath the draw-slate until it is made safe from falling, by securely posting it, and he shall not remove the posts until the coal is removed and he is ready to take down the draw-slate. [=Shall load fine coal.=] He shall not place in the gob or refuse pile, or cover up, any fine coal or coal dust, but shall load same into cars. (Sec. 944; Penalty, Sec. 976.)