Pennsylvania Statutes Title 52 P.S. Mines and Mining § 690-227. Furnishing copies of maps

A copy of the mine map shall be furnished every six months to the department. When more than one seam of coal is being worked in any mine, the department shall be provided with a separate copy of the original map of the complete workings of each seam as provided for under this act. The copies shall remain in the care of the department. When one mine is working a seam of coal under another mine that is working an overlying seam and the two mines are operated by different operators, the operators shall exchange with each other copies of their respective mine maps showing such portions of their respective mines as may be directly above or below the other mine.