WAIS Document Retrieval[Code of Federal Regulations] [Title 43, Volume 2] [Revised as of October 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 43CFR3137.112] [Page 406] TITLE 43--PUBLIC LANDS: INTERIOR CHAPTER II--BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR PART 3130_OIL AND GAS LEASING: NATIONAL PETROLEUM RESERVE, ALASKA-- Table of Contents Subpart 3137_Unitization Agreements_National Petroleum Reserve-Alaska Sec. 3137.112 What happens if I am prevented from performing actual or constructive drilling or reworking operations? (a) If you demonstrate to BLM that reasons beyond your control prevent you, despite reasonable diligence, from starting actual or constructive drilling, reworking, or completing operations, BLM will extend all committed NPR-A leases as if you were performing constructive or actual drilling or reworking operations. You are limited to two extensions under this section. (b) You must resume actual or constructive drilling or reworking operations when conditions permit. If you do not resume operations-- (1) BLM will cancel the extension; and (2) The unit terminates (see Sec. 3137.131 of this subpart). Change in Ownership