Underground mining activities shall be conducted to maximize the utilization and conservation of the coal, so that reaffecting the land in the future can be minimized. Provided, however, the resource, utility and conservation may not excuse the operator from complying in full with environmental protection and health and safety standards.
25 Pa. Code § 89.61
This section cited in 25 Pa. Code § 88.492 (relating to minimum requirements for reclamation and operation plan); and 25 Pa. Code § 88.493 (relating to minimum environmental protection performance standards).