25 Pa. Code § 77.503
(a) An exploration hole, other drill or borehole, well or other exposed underground opening—except for holes solely drilled and used for blasting—or other opening exposed during surface mining activities shall be cased, sealed or otherwise managed as approved by the Department if necessary to:
The provisions of this § 77.503 adopted March 16, 1990, effective March 17, 1990, 20 Pa.B. 1643; amended January 30, 1998, effective January 31, 1998, 28 Pa.B. 619. Immediately preceding text appears at serial pages (198740) to (198741).
This section cited in 25 Pa. Code § 77.109 (relating to noncoal exploration activities); and 25 Pa. Code § 77.456 (relating to reclamation information).