Section 3237 - Exemptions and prohibitions(a) Inapplicability of chapter to certain coal mines.--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 former 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 and preservation of property connected therewith," did not apply in accordance with section 3 of that act.(3) Mines to which the former 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 in accordance with section 32 of that act.(b) Workable coal seams.--Injection of gas for storage purposes in a workable coal seam, whether or not it is being or has been mined, is prohibited.(b.1) Original extraction.--Nothing in this chapter prohibits original extraction of natural gas, crude oil or coal.(c) Certain rock formations.--Nothing in this chapter applies to storage of gas or liquids in storage reservoirs excavated in rock formations specifically for storage purposes.Added by P.L. 87 2012 No. 13, § 1, eff. 4/14/2012.