Section 601.307 - Exemptions(a) The provisions of this chapter shall not apply to the following types of coal mines: (1) Strip mines and auger mines operating from the surface.(2) Mines to which the provisions of the act of June 9, 1911 (P.L. 756, No. 319), entitled "An act to provide for the health and safety of persons employed in and about the bituminous coal-mines of Pennsylvania, and for the protection of preservation of property connected therewith," did not apply as provided in section 3 of Article XXVIII thereof, and mines to which the provisions of the act of June 2, 1891 (P.L. 176, No. 177), entitled "An act to provide for the health and safety of persons employed in and about the anthracite coal mines of Pennsylvania and for the protection and preservation of property connected therewith," did not apply as provided insection 1 of Article I thereof. (b) Injection of gas for storage purposes in any workable coal seam, whether or not such seam is being or has been mined, shall be prohibited. Nothing in this chapter shall be construed to prohibit the original extraction of natural gas, crude oil or coal.(c) Nothing contained in this chapter shall apply to the storage of gas or liquids in storage reservoirs excavated in rock formations specifically for storage purposes.1984, Dec. 19, P.L. 1140, No. 223, § 307, effective in 120 days.