all be restored without delay.

[=Emergency appliances.=] When the only means of egress is by
vertical shaft, in which cages or elevators are used as a means of
hoisting persons therein employed, and the power for operating same
is derived from but one source, the owner, lessee or agent shall
provide and keep on hand for use in the event of an accident to the
hoisting apparatus or the power by which same is operated, a
suitable windlass, capable of hoisting the persons from the mine.

[=Competent engineers.=] The owner, lessee or agent of a mine worked
by a shaft or slope, shall put in charge of an engine used for
lowering into or hoisting out of such mine persons employed therein,
only experienced, competent and sober engineers. (Sec. 916, 928;
Penalty, Sec. 976.)

Sec. 928. [=Metal speaking tube and safety appliances.=] The owner,
lessee or agent of a mine operated by shaft, shall provide and
maintain a metal tube suitable for conversation between persons,
connecting the engine room with the top and bottom of such shaft; an
approved safety catch, a sufficient cover, and rings or other
adequate handholds for ten persons, on all cages used for lowering
and hoisting persons: Such cages to be protected on each side by a
boiler plate not less than one-fourth inch in thickness, and not
less than three feet high, and shall provide an approved safety gate
at the top of each shaft, an adequate brake to control the drum used
for lowering or hoisting persons in shafts or slopes, and an
indicator on all machines used for such purpose, to show the
location of cages in shaft or slope. No cage having an unstable or
self-dumping platform shall be used for the carriage of persons
unless such platform is securely locked. (Sec. 916, 927; Penalty,
Sec. 976.)

Sec. 929. [=Hoisting and lowering of persons.=] The owner, lessee or
agent of a mine, at which the only means of ingress and egress for
the persons employed therein is by a vertical shaft or shafts, of
fifty feet or more in depth, shall designate one or more persons
whose duty shall be to attend to the lowering and hoisting of
persons into and out of such mine, and give and receive the proper
signals, governing the movement of the cage while engaged in
handling men. Not more than ten persons shall be lowered or hoisted
at any one time. The lowering of persons shall begin in time for
persons to reach their working places by hour appointed for mine to
commence work and c