APPROXIMATELY LOCATED IN OR AROUND THE LINCOLN MINING DISTRICT; PROPERTY INVESTIGATIONS REPORT; PROPERTY SUMMARY; GEOLOGY; BERTRANDITE; PHENACITE; BERYL; U.S. BUREAU OF MINES INFORMATION CIRCULAR IC-8158 ; SITE NAME: JEPPSON, JEPPSON GROUP, ANACONDA CO.; COMMODITY: BERYLLIUM, TUNGSTEN; AUTHOR: HOLMES, G.H., JR.