Ohio, December 21, 1917.


[=Removal of combustible matter.=] Whenever an entry or air-way
becomes so dry that the air becomes charged with dust, the owner,
lessee or agent shall cause such entry or air-way to be sprinkled,
and all accumulated matter, explosive in its nature, shall be
removed from the mine. (Sec. 956.)


[=Quantity of oil in mine restricted.=] No oil shall be taken into
or stored in a mine except as may be required to be opened for use
within two days thereafter; and in no case shall more than two
barrels of oil be kept at any one place, and not more than ten
barrels of oil shall be had in a mine at any one time. All waste oil
and empty barrels shall be promptly removed from the mine. (Sec.
974, 975.)


[=Location of boilers at mine.=] The permanent boilers used for
generating steam, and the buildings containing the boilers, shall
not be nearer than sixty feet to any mine opening or to a building
or inflammable structure connected with or surrounding such opening.
(Penalty, Sec. 976.)


Sec. 945. [=Relating to underground stables.=] The owner, lessee or
agent of a coal mine at which the live stock is kept underground,
shall observe the following: The stable or stall shall be separated
from the main inlet and main outlet air-courses by not less than