Oklahoma Administrative Code
Title 460 - Department of Mines
Chapter 20 - The Permanent Regulations Governing the Coal Reclamation Act of 1979
Subchapter 43 - Permanent Program Performance Standards: Surface Mining Standards
Section 460:20-43-50 - Cessation of operations: permanent

(a) Persons who cease surface mining activities permanently shall close or backfill or otherwise permanently reclaim all affected areas, in accordance with this Chapter and the permit approved by the Department.

(b) All underground openings, equipment, structures, or other facilities not required for monitoring, unless approved by the Department as suitable for the postmining land use or environmental monitoring, shall be removed and the affected land reclaimed.