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