52 Pa. Stat. § 681.16
If and when the Secretary of Mines and Mineral Industries shall find that the operator has completed the backfilling and other acts as required by this act, and a report is filed by the inspector certifying that it has been done in the manner prescribed by this act, the Secretary of Mines and Mineral Industries shall issue a release of the bond or of the cash and securities deposited, retaining one hundred dollars ($100) per acre affected until such time as the planting is completed and certified to by the forester as being done in workmanlike manner at which time the retained one hundred dollars ($100) per acre shall be released. Upon the presentation of such release, the State Treasurer shall immediately return to the operator the amount of cash or securities specified in its release.
52 P.S. § 681.16