[=Two rings or whistles.=] Two rings or whistles shall signify to lower cage.

[=Three rings or whistles.=] Three rings or whistles shall signify that men are coming up; when return signal is received from the engineer, men will get on the cage, and cager shall ring or whistle one to start.

[=Four rings or whistles.=] Four rings or whistles shall signify to hoist slowly, implying danger.

[=Five rings or whistles.=] Five rings or whistles shall signify accident in the mine and a call for a stretcher.

=From the Top to the Bottom.=

[=One ring or whistle.=] One ring or whistle from the top to the bottom shall signify:  All ready, get on cage.

[=Two rings or whistles.=] Two rings or whistles shall signify:  Send away empty cage.

[=Addition to code, when allowed; code must be posted at top and bottom.=] Provided, that the management of any mine, may, with the consent of the district inspector of mines, add to this code of signals in his discretion, for the purpose of increasing its efficiency, or of promoting the safety of the men in said mine, but whatever code may be established and in use at any mine must be furnished by the mining department, conspicuously posted at the top and at the bottom and in the engine room, for the information and instruction of all persons concerned.

[=Emergency signal in shafts.=] At each mine where persons are hoisted in a vertical shaft, an emergency signal shall be provided in such manner that persons can give signals from the cage, in the event that cage is stopped between the top and bottom landings.  (Sec. 929; Penalty, Sec. 976.)

Sec. 943. [=Lights in mines.=] The owner, lessee or agent of each mine shall provide an enclosed lard or signal oil lamp or lantern or incandescent electric light at such point or points in the mine as may be necessary for the proper safety of persons, especially at the top of extreme grades.  No open light shall be used for fixed or stationary purposes; no open torches or lamps larger than the lamps provided for in this act for use as open lights, and no coal oil or kerosene lamp or lanterns, shall be used in a mine.  This, however, shall not prevent the use of a torch or blow-torch for mechanical purposes other than illumination. (Sec. 961.)

[=Light or signal on locomotives and trains.=] The owner, lessee or agent of a mine at which locomotives are used for hauling the coal, shall keep a light on the front end of the locomotive when it is in use, and when the locomotive is run ahead of the trip, and the trip-rider is not required to ride the rear car of the trip, a signal, light or marker, approved by the district inspector of mines, shall be carried on the rear end of the trip to indicate when the trip has passed.  Cars shall not be pushed ahead of the locomotive where it can be avoided, and when cars are run ahead of the locomotive a light shall be carried on the front end of the trip and the cars shall not