be kept at the office of the company, lessee or individual so mining and shall be at all times accessible to the said inspector for reference only.

SEC. 7. And be it enacted, That the owner, lessee or agent of every coal, mine that may now be in operation in the said Counties of Allegany or Garrett whether worked by slope shaft or draft shall provide and establish within six months from the passage of this act, for every such mine, a proper system of pure air ventilation to be well circulated through every working excavation throughout the entire mine, and to render harmless and to expel from said mines the noxious gases or impure air so that the entire mine shall be in a healthful condition for the men working therein, and free from all danger to their lives by keeping therefrom such impure air or gases. SEC. 8. And be it enacted, That to secure, and provide for the proper ventilation of every coal mine in the Counties of Allegany and Garrett, and to provide for the health and safety of the men employed therein	Provide and establish.
the owner, lessee or agent of each respective mine shall employ a competent and practical inside overseer, whose duty it shall be to keep a careful watch over all the ventilating apparatus that may be placed in said mine as well as all the airways, all the travelling ways and all the timberings, and to see that all loose coal or rocks overhead be carefully secured against falling upon any of the miners engaged at	Empl'y inside overseer.
work therein, as they advance in their excavations, and it shall be the duty of the inside overseer, so employed to take charge of and keep a careful watch over all things connected with and appertaining to the safety of the men at work in the mine, and to report to the owner, lessee or agent of said mine, when and where anything under his charge is unfit for mining purposes; and it shall also be the duty of the inside overseer, so employed, to take charge of and pay strict attention to all the air-doors used in the ventilation of said mines, and all air-doors used in separating or in any manner whatever tending to the ventilation of said mines, shall be suspended in such a manner that they will close of their own accord.	Duties of overseer.