Pictures 4 Bald Mountain Gold Mill, Lead South Dakota
TROJAN MILL, INTERIOR SHOWING PRIMARY MILL No. 1 (ALLIS CHALMERS BALL MILL) FROM EAST, c. 1919. ELECTRIC MOTOR AND DRIVE SHAFT CLEARLY VISIBLE
BALD MOUNTAIN MILL, INTERIOR SHOWING GOLD TANKS FROM WEST, c. 1937. DATE BASED ON USE IN PUBLICATION
BALD MOUNTAIN MILL, INTERIOR SHOWING PRECIPITATION AREA FROM NORTH, c. 1934. SHOWS PRECIPITATION TANK No. 1 (NOTE LOCKS), ZINC FEEDER WITH MIXING CONE, VACUUM RECEIVER AND PIPING
INTERIOR, PORTLAND FILTER FROM SOUTHEAST, PRE-1934. FILTERS WERE IN USE FROM 1918 TO 1934
BALD MOUNTAIN MILL, REFINERY INTERIOR, c. 1937. CRUCIBLE AND DRYING OVENS SHOWN


