; (2) in subparagraph (C), by striking the period at the end and inserting ; and ; and (3) by adding at the end the following: (D) would not result in a reduction of revenue. . 9. Size of coal leasing modifications Section 3(a)(3)(A) of the Mineral Leasing Act ( 30 U.S.C. 203(a)(3)(A) ) is amended by striking 960 acres and inserting 160 acres . 10. Coal leasing program The Mineral Leasing Act is amended by inserting after section 3 ( 30 U.S.C. 203 ) the following: 4. Coal leasing program (a) In general The Secretary shall prepare, periodically revise, and maintain a coal leasing program to implement this Act. (b) Content The leasing program shall consist of a schedule of proposed lease sales indicating, as precisely as practicable, the size, timing, and location of leasing activity that the Secretary determines will best meet national needs for the 5-year period following the approval or reapproval of the program. (c) Principles The leasing program shall be prepared and maintained in a manner consistent with the following principles: (1) Leasing activities for coal subject to this Act shall be conducted— (A) to ensure receipt of fair market value for the land leased and the rights conveyed by the Federal Government; (B) to maximize competition for Federal coal leases; and (C) to maximize the financial return per ton of coal leased for taxpayers of the United States. (2) Management of coal subject to this Act shall be conducted in a manner that considers— (A) the economic, social, and environmental values of Federal land and the coal resource; and (B) the potential impact of coal leasing on other resource values and the natural and human environments. (3) Timing and location of exploration, development, and production of coal among or within the coal-bearing physiographic regions shall be based on a consideration of— (A) existing information concerning the geographical, geological, and ecological characteristics of the regions