four persons shall be lowered or hoisted in or on a bucket at one time, and no person shall be permitted to ride on a loaded bucket.  The bucket used in lowering or hoisting persons shall be equipped with proper safety devices, so that same cannot become detached from the rope or cable, and cannot tip or turn upside down while being so used.  The chief inspector of mines, and the district inspector of mines, shall have jurisdiction over such mine when the shaft or slope reaches a depth of twenty-five feet, and such person, firm or corporation shall comply with any order issued by either or both of them with respect to the safety of persons employed.  Other than the provisions herein, the provisions of this act shall not apply to the opening of a mine until such opening reaches the seam, and the entry or landing be extended beyond a breakthrough, or other place driven at right angles thereto. (Penalty, Sec. 976.)

Sec. 950. [=Additional openings; when and how provided for.=] When in the opinion of the district inspector of mines together with the chief inspector of mines, the ways and means of egress in any mine under their jurisdiction, from the interior working places to the surface, as provided for in this act, are inadequate as a safe and ready means of escape in case of probable emergency, and there are extra hazards of a permanent nature that cannot be removed either from long distance from the interior working places to the exterior openings for egress, from danger of fire at any point, or any other cause that probably will result in the entombment of persons working therein, they shall jointly give notice in writing to the owner, lessee or agent of such mine, and require an additional opening by shaft, slope or drift, from the surface; the location of the interior end of such shaft, slope, or drift, to be sufficiently near the interior working places in that part of the mine where such persons are endangered, to afford such persons safe and ready means of escape, free from such hazards. (Sec. 932; Penalty Sec. 976.)

=Relating to superintendent, mine-foreman and over-seer.=

Sec. 951. [=Duties of superintendent.=] The superintendent in charge of a mine shall see that the provisions of this act are carried out, and shall, in case of an accident resulting in the death of or injury to persons, carefully investigate such accident, and report to the chief inspector of mines, as provided for in this act, and to the owner, lessee or agent of the mine.  He shall give such other notice to the chief inspector of mines as required by the provisions of this act, and shall co-operate with the mine-foreman and direct him as may be necessary in securing a compliance with the provisions of this act, and the safety of the persons employed in the mine.  Nothing herein shall prohibit the superintendent from fulfilling the duties of mine-foreman. (Sec. 940, 953, 962, 965; Penalty, Sec. 976.)