2794 ARTICLE 89.

be made by the mine foreman to the district mine inspector upon blanks to
be provided by the Bureau.

1922, ch. 307, sec. 104.

105. No person ordered by the mine foreman to leave a mine because
of ventilation difficulty shall re-enter until given permission by such mine
foreman; which permission, if the mine be gaseous, shall not be given
until the mine has been thoroughly examined by the mine foreman or fire
boss and reported safe. The district mine inspector shall examine all rec-
ords of ventilation at every visit to such mine, and inspect the apparatus
and all instrumentalities for conducting, controlling or supplying ventila-
tion, shall see to the enforcement of each requirement of this sub-title or
regulations thereunder relating thereto, and keep a detailed record of each
such inspection and his steps taken thereupon.

CHAPTER XV—Communications.
1922, ch. 307, sec. 105.

106. Efficient means of communication and signalling between the
top and bottom of every shaft and slope and to any other points deemed
necessary by the Bureau shall be provided and maintained, in a manner
and by means directed and approved by such Bureau.

1922, ch. 307, sec. 106.

107. Uniform forms for signal and warning devices and indicating
signs shall be prepared by the Bureau and the operator of every mine shall
provide, distribute and employ such numbers thereof as may be directed,
convenient for use at need to notify persons concerned of dangers not
readily apparent.

1922, ch. 307, sec. 107.

108. The following signal code, where applicable shall be followed
in all mines when signals are used:

ONE RING or WHISTLE: Hoist; if in motion, Stop.

TWO RINGS or WHISTLES: Lower Cage. If signaled from top,
Send Away Empty Cage.

THREE RINGS or WHISTLES: Men are Coming Up. When engi-
neer replies by one ring, persons get on cage and ring once to hoist.

FOUR RINGS or WHISTLES : Hoist Slowly; implying danger.

FIVE RINGS or WHISTLES: Accident in Mine—Send Stretcher.

Additional signals may be added by agreement between the operator
and the district mine inspector, but such signals must be printed together
with the code herein provided, on large posters or cards, and displayed in
the engine room and at all points where used.

1922, ch. 307, sec. 108.

109. Any person who shall deface, pull down, destroy, interfere with
or disregard any notice board, signal or warning in any such mine, or