No later than one year after August 3, 1977, the Secretary shall promulgate and implement a Federal lands program which shall be applicable to all surface coal mining and reclamation operations taking place pursuant to any Federal law on any Federal lands: Provided, That except as provided in section
of this title the provisions of this chapter shall not be applicable to Indian lands. The Federal lands program shall, at a minimum, incorporate all of the requirements of this chapter and shall take into consideration the diverse physical, climatological, and other unique characteristics of the Federal lands in question. Where Federal lands in a State with an approved State program are involved, the Federal lands program shall, at a minimum, include the requirements of the approved State program: Provided, That the Secretary shall retain his duties under sections
, (2)(B) and
of this title, and shall continue to be responsible for designation of Federal lands as unsuitable for mining in accordance with section
of this title.