APPROXIMATELY LOCATED IN OR AROUND THE LEVIATHAN MINING DISTRICT ; COPPER; SULPHUR; SULPHUR; COPIES FROM: UNITED STATES BUREAU OF MINES; MINERALS YEARBOOK; THE MINERAL INDUSTRY OF CALIFORNIA; 1958; VOL. III; PAGES 165; 177; LEVIATHAN MINE (NEAR MARKLEEVILLE; CALIFORNIA); IN ALPINE COUNTY CALIFORNIA - ACID DRAI