Pennsylvania Statutes Title 52 P.S. Mines and Mining § 690-268. Prohibitions regarding endangering security of mine

(a) Prohibitions regarding ventilation.--No miner, worker or other individual shall knowingly damage, obstruct or remove any shaft, lamp, instrument, air course or other equipment, obstruct or disrupt any portion of the mine's ventilation, carry open lights, open a door closed for directing ventilation and not close it again or enter any part of a mine that has been dangered off. No individual shall deface, pull down or destroy any notice boards, record books or mine maps.

(b) Smoking prohibition.--Open lights, smoking and smokers' articles, including matches, are prohibited in bituminous coal mines. No individual shall at any time enter a mine with or carry into the mine any matches, pipes, cigars, cigarettes or any device for making lights or fire not approved. In all mines, the operator may search or cause to be searched any individual, including his clothing and material belongings, entering or about to enter the mine, or inside the mine, to prevent such individual from taking or carrying into the mine any of the articles prohibited by this subsection.

(c) Intoxicated individuals.--No individual under the influence of alcohol or a controlled substance shall enter into or loiter about any mine. No individual shall have in his possession alcohol or controlled substances while in or about the mine premises. This provision shall not apply to the use of medication as prescribed for that individual.