52 Pa. Stat. § 823
After the passage of this act, upon written request so to do, the owners or owner, lessee or lessees, or operator, of each bituminous coal or clay mines in this Commonwealth, shall provide, furnish, give, or lend to the owner or owners, or lessee or lessees, of adjoining coal or clay lands a true map and plat of such mines, made from actual survey, showing all rooms, headings, and workings convenient to and along the division line of such adjoining coal or clay lands; and on the neglect, failure, or refusal to comply with such written request, or for the purpose of verifying the accuracy of such map or plat furnished in compliance with such written request, the owner or owners, or lessee or lessees, of such adjoining coal or clay lands, shall have the right to enter such mines, with or by such agents, surveyors, and assistants as shall be required for this purpose, and ascertain and verify by surveys and measurements the true condition plan, plat, and workings of such mines, convenient to and along the division line of such adjoining coal or clay lands. At least five days notice shall be given to the operator or superintendent of such mines, before entering the same for the purpose aforesaid. The time selected for such entry and survey shall be such as shall at least interfere with the active operations of such mines.
52 P.S. § 823