APPROVAL OF LOGICAL MINING UNITS.

SEC. 433. APPROVAL OF LOGICAL MINING UNITS. Section 2(d)(2) of the Mineral Leasing Act (30 U.S.C. 202a(2)) is amended—(1) by inserting “(A)” after “(2)”; and (2) by adding at the end the following: “(B) The Secretary may establish a period of more than 40 years if the Secretary determines that the longer period—“(i) will ensure the maximum economic recovery of a coal deposit; or “(ii) the longer period is in the interest of the orderly, efficient, or economic development of a coal resource.”.