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Mining Laws of Ohio, 1921 by Anonymous
page 45 of 157 (28%)
twenty feet of solid strata or a solid wall of brick or masonry not
less than twelve inches in thickness, except at two doors not more
than five feet wide, which shall be made of steel plate not less
than one-quarter inch in thickness and hinged to the solid strata or
masonry without the use of wood; the ventilation for the stable
shall be taken from main inlet air-course by a by-pass or separate
split and returned to the main outlet air-course so that the air
passing the stables will not enter the inward working places of the
mine, and arranged so that the by-pass or split can readily be
closed at both inlet and outlet sides of the stable by steel doors
hinged to the solid strata or masonry without the use of wood; the
construction of the stable inside shall be free from pine or light
lumber; shall be of brick or masonry as much as practicable, and any
timber used shall be of hardwood of a cross section not less than
three by six inches; no hay or straw shall be taken into the mine or
stable unless same be compressed into compact bales, and then only
from time to time in such quantities as will be required for two
days' use; no greater quantity of hay or straw shall be stored in
the mine or stable, and when such is taken into the mine it shall be
taken inside the stable at once; the lights used in the stable shall
be incandescent electric lamps, placed so that same will not be
injured by the stock or by persons required to enter the stable, or
lanterns of railroad type suitable for using lard or signal oil, and
only such oil shall be used therein; all refuse and waste shall be
promptly removed from the stable and the mine, and shall not be
allowed to accumulate. Stables constructed underground after the
passage and approval of this act, shall be located not nearer than
one hundred and fifty feet of any opening to the mine used as a
means of ingress or egress. (Sec. 955, 960; Penalty, Sec. 976.)

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