SRC.REF: CALLAGHAN, 1973CALLAGHAN, E., 1973 , MINERAL RESOURCE POTENTIAL OF PIUTE COUNTY AND ADJOINING AREAS: UTAH GEOL. AND MINERALOG. SURVEY BULLETIN 1021973 RECON UGMS BULL 10TRIMBLE, L. M., 1978 , UTAH GEOL. AND MINERALOG. SURVEY ON-SITE INVESTIGATION