shall be appointed chief inspector of mines unless he has a
competent knowledge, insofar as such sciences relate to mining, of
chemistry, the mineralogy and geology of this state, a practical
knowledge of the different systems of working and ventilating mines,
the nature and properties of the noxious and poisonous gases in
mines, particularly fire-damp, the best means of preventing the
accumulation of such gases, and the best means of removing the same.
He shall also have had at least five years actual practical
experience in mining in this state, shall have a knowledge of mine
engineering, and shall have a practical knowledge of the uses and
dangers of electricity as applied at, in, and around mines.


Sec. 900. The Industrial Commission of Ohio shall appoint, with the
approval of the governor, and upon recommendation of the chief
deputy of the division of mines and mining, five district inspectors
of mines in addition to those now in such service, making in all the
number of district inspectors of mines seventeen.


Sec. 901. [=Qualifications of district inspectors of mines.=] No
person shall be appointed district inspector of mines unless he has
been a resident of the district for which he is appointed, for at
least two years, has had at least five years' actual practical
experience in mining in this state, has a practical knowledge of the
best methods of working and ventilating mines, of the nature and
properties of noxious and poisonous gases, particularly fire-damp,
of the best means of detecting the presence of and preventing
accumulation of such gases and the best means of removing the same,
and has a practical knowledge of the uses and dangers of electricity