52 Pa. Stat. § 1406.20a
In order to maintain primary jurisdiction over coal mining in Pennsylvania, it is hereby declared that for a period of two years from the effective date of this act the department shall not enforce any provision of this act which was enacted by these amendments solely to secure for Pennsylvania primary jurisdiction to enforce Public Law 95-87, the Federal Surface Mining Control and Reclamation Act of 1977, if the corresponding provision of that act is declared unconstitutional or otherwise invalid due to a final judgment by a Federal court of competent jurisdiction and not under appeal or is otherwise repealed or invalidated by final action of the Congress of the United States. If any such provision of Public Law 95-87 is declared unconstitutional or invalid, the corresponding provision of this act enacted by these amendments solely to secure for Pennsylvania primary jurisdiction to enforce the Federal Surface Mining Control and Reclamation Act of 1977, Public Law 95-87 shall be invalid and the secretary shall enforce this act as though the law in effect prior to these amendments remained in full force and effect.
It is hereby determined that it is in the public interest for Pennsylvania to secure primary jurisdiction over the enforcement and administration of Public Law 95-87, the Federal Surface Mining Control and Reclamation Act, and that the General Assembly should amend this act in order to obtain approval of the Pennsylvania program by the United States Department of the Interior. It is the intent of this act to preserve existing Pennsylvania law to the maximum extent possible.
52 P.S. § 1406.20a