30 CFR § 77.1712
Reopening mines; notification; inspection prior to mining.
Prior to reopening any surface coal mine after it has been abandoned or
declared inactive by the operator, the operator shall notify the Coal Mine
Health and Safety District Manager for the district in which the mine is
located, and an inspection of the entire mine shall be completed by an
authorized representative of the Secretary before any mining operations in
such mine are instituted.