STATISTICS AND INFORMATION. 2799

1922, ch. 307, sec. 130.

131. No safety lamp shall be entrusted to any person for use in a
mine, until said person has given satisfactory evidence to the mine fore-
man that he understands the proper use, and the danger of tampering
with the same. No one, except a person authorized, shall have- in his
possession any key or other instrument for unlocking any safety lamp,
while within any gaseous mine. Any person found, while within any such
mine, to have any such key or other instrument for unlocking any safety
lamp, or found opening or tampering with or to have tampered with any
such lamp, or to have matches or any unauthorized lighting device in his
possession, shall be deemed guilty of a misdemeanor; and any operator
or any person by such operator authorized, who shall fail to supply prop-
erly cleaned, safe and safely secured safety lamps for use in such mine
whenever necessary, shall be deemed guilty of a misdemeanor; Provided,
that this shall not prohibit the use of a flame in the intake air only, for
the purpose of making necessary repairs to machinery or wires, when in
charge of persons authorized to do such work.

1922, ch. 307, sec. 131.

132. The mine foreman, whenever in his opinion the mine is becom-
ing dangerous from accumulations of gas, and additional ventilation is
required, beyond the capacity of the ventilating equipment, shall notify
the district mine inspector, who shall make an immediate personal ex-
amination, and if such inspector finds that the ventilating equipment is in-
sufficient, he shall by special safety order require the operator to provide
adequate equipment, and if necessary to make additional openings from
the surface, or bore holes to furnish a vent in the case of gas accumulations.

CHAPTER XIX—Fire Bosses.
1922, ch. 307, sec. 132.

133. The operator of every gaseous mine shall employ a sufficient num-
ber of fire bosses, each of whom shall satisfy the operator of his compe-
tency, and shall have first obtained a certificate of competency from the
Examining Board, as hereinbefore provided. Such fire boss shall care-
fully examine, before each shift enters the mine, every working place, all
places adjacent to live workings, every roadway, every unfenced road to
abandoned workings, and falls in the mine, the entrance to worked-out
portions of such mine, adjacent to roadways and working places under
his charge, within which accumulations of explosive gas may gather; and
at each working place such fire boss shall mark the date and his initials
upon the face. He shall note the air at every such point, and shall see
whether the air currents are traveling their proper course; and wherever
he finds explosive gas or other danger, he shall either fence off the danger-
ous locality or place warning signals across the passage way, ordering
all persons not to enter.