At all said mines in this state, all explosives shall be stored in a magazine placed far enough away from hoisting derricks to insure their remaining intact in case of explosion. All explosives in excess of the amount required for the work of one shift shall be kept in such magazine. Powder other than the shifts requirements shall not be stored in underground workings; provided, however, where such mines are located in densely populated areas, and then only with the permission of the deputy mine inspector, explosives may be stored underground in a suitable place selected by the said inspector, but in no event shall more than three (3) days normal requirements at the particular mine be so stored underground. No explosives shall be transported on or in any electric or gasoline locomotive, or in the car next to these locomotives. Detonators or caps shall not be stored or transported with other explosives. Mechanical loading devices, first found to be safe for the miners who work in said mine by the assistant mine inspector, and such finding is approved by the Chief Mine Inspector, or wood-loading sticks or tamping bars protected with copper ferrules and copper spike must be used when loading holes. All blasting caps shall be crimped onto fuse by regulation crimper. Powder delivered to top of shaft shall be lowered into ground immediately. Explosives must not be taken from any mine without the consent of the foreman in charge. Open lights must not be used in powder magazines or detonator magazines. Explosives stored in ground must be so stored as not to cut off passage of men to shaft in case of explosion occurring. No employee shall return to a drift, heading, shaft, or tunnel, or other place where a shot has failed to explode until a period of at least thirty (30) minutes has elapsed after firing; all failed shots to be promptly reported to foreman by employees. No employees other than those employed in shaft sinking shall ride any can, bucket or hoisting apparatus carrying explosives. No shooting or blasting shall be done from the time the man shift goes on until the man shift goes off, except in extreme case for the protection of life.