53 Pa. Stat. § 5204
The owner, operator, or superintendent, of every coal-mine or colliery shall, within three months after the passage and approval of an ordinance by any municipal corporation in this Commonwealth creating a Bureau of Mine Inspection and Surface Support, authorized by this act, make or cause to be made and furnished to the Bureau of Mine Inspection and Surface Support an accurate map or plan of the workings or excavations of such coal-mine or colliery, on a scale of one hundred feet to the inch; which map or plan shall exhibit the workings or excavations in every seam of coal on a separate sheet, and the tunnels and passages connecting with such workings or excavations. It shall state in degrees the general inclination of the strata, with any material deflection therein in said workings or excavations, and shall also state the tidal elevations of the bottom of each and every shaft, slope, tunnel, and gangway, and of any other point in the mine or on the surface where such elevation shall be deemed necessary by the Bureau of Mine Inspection and Surface Support. The map or plan shall show the number of the last survey station, and date of each survey on the gangways or the most advanced workings.
53 P.S. § 5204