726 LAWS OF MARYLAND. [CH. 307

mines, fanhouses shall be constructed of fireproof material;
and no fire shall be permitted in any tipple, or other structure
connected with any shaft, unless the same be built of fire-
proof material.

SEC. 142. The operator may search or cause to be searched,
any person entering or about to enter, any gaseous mine, to
prevent such person from taking or carrying therein, any in-
toxicating liquors, matches, pipes, cigars, cigarettes, or any
device for making light or fire not authorized or approved.

TITLE VII—EXPLOSIVES: USE AT MINE.
CHAPTER XXI—Storage; Precautions.

SEC. 143. It shall be unlawful for any person to have, use
or permit to be used at or within any gaseous or dusty coal
mine within this State, any explosive of any type or kind not
designated as "permissible," and approved by the Bureau;
or to use any such explosive except in such a manner and with
such precautions as are recommended by the manufacturer
thereof and approved by the Bureau; and all such explosives
shall be carefully packed in containers or packages, which
shall be plainly marked with the name of the explosive and
its manufacturer, the quantity and full instructions upon the
safe method of handling the same.

SEC. 144. The Bureau shall make regulations to govern
the supply, storage, transportation and handling of explosives
intended for use in or about any such mine, and the use of
such explosives, including the quantity to be kept on hand,
in storage, and for immediate use within the mine; the dis-
tance from the mine and from mine buildings and from any
habitations, and precautions against accidental ignition thereof.

SEC. 145. If any person shall open any container of explo-
sives by the use of a pick or any other method which may
endanger the safety of persons or property within such mine
and in disregard of proper instructions for opening such con-
tainers, such act shall be a misdemeanor.

CHAPTER XXII—Blasting in Clines.

SEC. 146. In all gaseous or dusty mines, the district mine
inspector may by special safety order, approved by the Bu-
reau, require the operator thereof to employ a sufficient num-
ber of competent persons, able to speak the English language,