52 Pa. Stat. § 651
All persons, partnerships, associations and corporations engaged in the mining of anthracite coal in this commonwealth shall provide and erect, at each of their coal mines or collieries, standard and lawful scales for weighing the coal mined therein; and each and every miner's coal shall be separately and accurately weighed on said scale before said coal is dumped and taken from the car on which said miner loaded it in the said mine or colliery, and a separate and an accurate account shall be kept by all said persons, partnerships, associations and corporations of the number of pounds of coal mined by each miner as aforesaid; and the miners in each mine shall have the right to employ, at their own expense, and keep a weigh master at each of said scales to inspect said scales, and also keep an account of the number of pounds of coal mined by each miner; and the miners at each mine or colliery shall be paid at the rate of so much per pound for amount of coal mined by them, and the pound weight shall be the basis from which to calculate the earnings at all mines or collieries: Provided, That the provisions of this act shall apply only to mines or collieries in which the coal mined has heretofore been paid for by the car, and that this act shall not go into effect until sixty days after its approval by the governor: And provided further, That if any of said persons, partnerships, associations or corporations shall neglect or refuse to comply with the provisions of this act, he or they so neglecting or refusing shall forfeit and pay, for every day said neglect or refusal after said sixty days, to the commonwealth of Pennsylvania, the sum of one hundred dollars, the same to be sued for and recovered in an action of debt in the court of common pleas having jurisdiction of the territory in which said mines or collieries may be situate, the writs in said action to be served on the said persons, partnership, association or corporation, or the superintendents, agents or clerks of said persons, partnerships, associations or corporations resident within the jurisdiction of said court: And provided further, That the provisions of this act shall not apply to or embrace any persons, partnerships, associations or corporations that may or shall by any contract agree with his or their miners in any of said mines or collieries, otherwise than as is provided in this act, for the compensation of mining the same, and no penalty provided therein shall apply to such persons, partnerships, associations or corporations so contracting or agreeing.
52 P.S. § 651