[Code of Federal Regulations] [Title 43, Volume 2] [Revised as of October 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 43CFR3140.5] [Page 399] TITLE 43--PUBLIC LANDS: INTERIOR CHAPTER II--BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR PART 3140_COMBINED HYDROCARBON LEASING--Table of Contents Subpart 3140_Conversion of Existing Oil and Gas Leases and Valid Claims Based on Mineral Locations Sec. 3140.5 Duration of the lease. A combined hydrocarbon lease shall be for a primary term of 10 years and for so long thereafter as oil or gas is produced in paying quantities.