mine except in metallic cans, with
a screw cap opening at the top, fitted with a suitable gasket: No
package or can, or the supply tank of an engine, containing
gasoline, naphtha or kerosene, shall be opened until ready to make
the transfer from the package or can to the supply tank, and in
transferring, a funnel shall be used so as to avoid spilling the
gasoline, naphtha or kerosene, and the cap on the supply tank shall
be immediately closed: In no case shall the package, can, or the
supply tank, be opened, with any open light or other thing
containing fire within twenty-five feet of same. (Penalty, Sec.
976.)

Sec. 947. [=Relating to use of electricity in mines.=] The owner,
lessee or agent of a mine in which electricity is used as a means of
power, shall observe the following in the application thereof:

[=Trolley wires.=] All trolley wires shall be carried at least six
inches outside of and parallel with the track rail on the side the
trolley wire is located. When regular height is less than six feet
six inches from top of rail, the lower side of trolley wire must not
exceed six inches from the roof or cross-timber with hangers now in
use, with hangers not to exceed twenty-five feet between centers,
and the tension sufficient to keep all wires from sagging and to
prevent trolley wheel from coming in contact with roof or
cross-timbers. All new hangers hereafter installed shall not exceed
five inches in depth from lower side of the trolley wire to the roof
or cross-timbers.

[=Wires crossing traveling ways.=] All trolley and positive feed
wires crossing places where persons or animals are required to
travel, shall be safely guarded or protected from such persons or
animals coming in contact therewith.

[=Wires opposite rooms and refuge holes.=] All trolley and positive
feed wires shall be placed on opposite side of track from refuge
holes or necks of rooms.

[=Bare wires; when not to extend into working places.=] No trolley
wire shall be extended into or maintained in any room while being
used as a working place; no trolley or feed wire shall be extended
into any entry beyond the outside corner of the last breakthrough.

[=Switches and circuit-breakers.=] Switches or circuit-breakers
shall be provided to control the current at the mine, and at all
important points in the mine.

[=Machine feed wires and insulators.=] All machine feed wires shall
be placed as near the rib and roof or cross-timbe