- (a) Refuse piles constructed on or after July 1, 1971, shall be located in areas which are a safe distance from all underground mine airshafts, preparation plants, tipples, or other surface installations and such piles shall not be located over abandoned openings or steamlines.
- (b) Where new refuse piles are constructed over exposed coal beds the exposed coal shall be covered with clay or other inert material as the piles are constructed.
- (c) A fireproof barrier of clay or inert material shall be constructed between old and new refuse piles.
- (d) Roadways to refuse piles shall be fenced or otherwise guarded to restrict the entrance of unauthorized persons.
[36 FR 9364, May 22, 1971, as amended at 36 FR 13143, July 15, 1971]