A true copy of which map or plan, the said operator or superintendent shall deposit with the inspector of mines for the district in which the said coal mine or colliery is situated, showing the workings of each seam. If so desired by the inspector, a copy may be made on a separate sheet of tracing muslin. One copy of the said map or plan shall be kept at the colliery and a copy shall be furnished by the superintendent or mine foreman to the inspector upon his arrival at the mine for the purpose of making a periodic inspection.
52 P.S. § 70-303