52 Pa. Stat. § 1389
It shall be a further duty of checkweighmen or checkmeasurers to credit each miner with all coal mined by him on a daily sheet, to be kept by him for that purpose, and on a semi-monthly sheet, he shall credit each miner with all coal mined for each period for which payment of wages is made, which daily and semi-monthly credit sheets shall be kept posted at or near the pit mouth of the mine by the checkweighman or checkmeasurer. Whenever the checkweighman or checkmeasurer is unable to credit any coal mined to the proper miner because the car on which the same is loaded is not properly marked or cannot be identified, it shall be his duty to keep account of such coal, and credit the same to the miner entitled thereto when claim therefor is lodged with him by such miner. If claim for any such unidentified coal is not made within thirty days after the same was mined, the checkweighman or checkmeasurer shall credit the same to his account for the payment of his wages. Payment for such coal shall be made by the operator as directed by the checkweighman or checkmeasurer, and where such wages are paid to the checkweighman or checkmeasurer, a corresponding reduction shall be made in the deductions from wages of the miners charged by this act with the payment of such wages. Any operator, or his servant, agent or employe, who shall refuse to credit such unclaimed coal as required by this section, shall, upon conviction in a summary proceeding, be sentenced to pay a fine of twenty-five dollars ($25.00), and, in default of the payment of such fine and costs, shall be sentenced to imprisonment for thirty days.
52 P.S. § 1389