[Code of Federal Regulations] [Title 43, Volume 2] [Revised as of October 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 43CFR3842.1-1] [Page 802] TITLE 43--PUBLIC LANDS: INTERIOR CHAPTER II--BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR PART 3840--NATURE AND CLASSES OF MINING CLAIMS--Table of Contents Subpart 3842--Placer Claims Sec. 3842.1-1 Discovery. But one discovery of mineral is required to support a placer location, whether it be of 20 acres by an individual, or of 160 acres or less by an association of persons.