The Secretary of the Interior is authorized to divide any lands subject to this chapter which have been classified for coal leasing into leasing tracts of such size as he finds appropriate and in the public interest and which will permit the mining of all coal which can be economically extracted in such tract and thereafter he shall, in his discretion, upon the request of any qualified applicant or on his own motion, from time to time, offer such lands for leasing and shall award leases thereon by competitive bidding:
Provided, That notwithstanding the competitive bidding requirement of this section, the Secretary may, subject to such conditions which he deems appropriate, negotiate the sale at fair market value of coal the removal of which is necessary and incidental to the exercise of a right-of-way permit issued pursuant to title V of the Federal Land Policy and Management Act of 1976 [
43 U.S.C. 1761 et seq.]. No less than 50 per centum of the total acreage offered for lease by the Secretary in any one year shall be leased under a system of deferred bonus payment. Upon default or cancellation of any coal lease for which bonus payments are due, any unpaid remainder of the bid shall be immediately payable to the United States. A reasonable number of leasing tracts shall be reserved and offered for lease in accordance with this section to public bodies, including Federal agencies, rural electric cooperatives, or nonprofit corporations controlled by any of such entities:
Provided, That the coal so offered for lease shall be for use by such entity or entities in implementing a definite plan to produce energy for their own use or for sale to their members or customers (except for short-term sales to others). No bid shall be accepted which is less than the fair market value, as determined by the Secretary, of the coal subject to the lease. Prior to his determination of the fair market value of the coal subject to the lease, the Secretary shall give opportunity for and consideration to public comments on the fair market value. Nothing in this section shall be construed to require the Secretary to make public his judgment as to the fair market value of the coal to be leased, or the comments he receives thereon prior to the issuance of the lease. He is authorized, in awarding leases for coal lands improved and occupied or claimed in good faith, prior to
February 25, 1920, to consider and recognize equitable rights of such occupants or claimants.