WWII - Color, 1944, USA Homefront: Story of Copper, A Pt. 2 of 3

WWII - Color, 1944, USA Homefront: Copper Mining Pt. 2 of 3 04:39:26 Cases of dynamite loaded into truck; boxes moved to drill holes & primers wrapped around bags of powder & lowered into hole. Truck pours stemming into hole to plug. Detonating cord attached to all holes. CU warning whistle operated. Blasting cap attached; man blows whistle & signal flag waved. 04:41:05 Plunger pushed & large explosion lifts hillside. 04:41:15 Shovels loading railroad ore cars; water sprayed to hold down dust. Ore moved to concentrator w/ three trains seen. 04:42:26 Crane placing sections of railroad track. Men on radio phones. 04:42:54 Dumping of waste loads; track moving machine lifting & replacing track to edge of dump area. View of ore or waste cars passing. 04:43:45 Illustrated art cards: “Mining, Concentrating, Smelting, Refining”; “Crushing, Grinding, Flotation, Filtration;” Ext. of large smelter. Dumping ore car at concentration plant to remove waste before smelting. Moved on conveyor & dumped into crusher; breaking boulders. 04:45:07 Crushed ore on conveyor to bins; crusher & screens filtering & moving onto belts. Grinder in ball mill & man inspecting. Men removing steel balls from crushed material in tumblers. 04:45:53 Chemicals added during milling; many turning machines w/ screw action moving slurry. Flotation tanks & agitating w/ air to get copper froth on surface; moved off & reprocessed. 04:47:33 LS thickening tanks for settling. Concentrate to vacuum filters where moisture removed & concentrate onto belt for smelting. 04:48:18 Waste tailings to settling tanks; removed, deposited at waste dams. 04:48:56 Art card of stages of smelting: “Reverberatory; converter; anode; casting wheel.” 04:49:23 LS of smelter buildings. Bedding plant ext & int. Flux over concentrate piles & mixture drawn off by machines & on conveyor into reverberatory furnace. Man w/ optical pyrometer viewing to measure temperature of furnace interior. Waste slag is poured off into tanks & dumped. Colorful. 04:50:39 Int. of furnace w/ molten ore, drawn off & pouring out into bucket & moved / poured into converter. Huge gear; men w/ protective hoods use rods to keep open. Slag poured off & returned to reverberatory furnace. Continued... Phelps Dodge Corporation; 1944; American Home Front, WWII; WW2; USA; NOTE: Probably Morenci or Cooper Queen Mine. Any continuous 17 minutes of film on 3 cards sold at per reel rate.