25 Pa. Code § 87.173
(a) Support facilities required for, or used incidentally to, the operation of the mine, including, but not limited to, mine buildings, coal loading facilities at or near the mine-site, coal storage facilities, equipment storage facilities, fan buildings, hoist buildings, preparation plants, sheds, shops and other buildings shall be located, maintained and used in a manner that does the following:
(2) To the extent possible using the best technology currently available minimizes:
The provisions of this § 87.173 adopted December 19, 1980, 10 Pa.B. 4789, effective July 31, 1982, 12 Pa.B. 2382; amended July 30, 1982, 12 Pa.B. 2473, effective July 31, 1982, 12 Pa.B. 2382; amended May 8, 1998, effective May 9, 1998, 28 Pa.B. 2227. Immediately preceding text appears at serial pages (206853).