[Code of Federal Regulations] [Title 43, Volume 1] [Revised as of October 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 43CFR3.6] [Page 40] TITLE 43--PUBLIC LANDS: INTERIOR PART 3--PRESERVATION OF AMERICAN ANTIQUITIES--Table of Contents Sec. 3.6 Time limit of permits granted. No permit will be granted for a period of more than 3 years, but if the work has been diligently prosecuted under the permit, the time may be extended for proper cause upon application.