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mining (105)

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UNITED STATES: 1940s: Drawing of mine shaft layout. Bonne terre dolomite on mine shaft illustration. Animation of miner reaching section of ore. UNITED STATES: 1940s: Miner prepares metal pole in mine shaft. Drill bores through rock. Dust and water from drill hole in rock. UNITED STATES: 1940s: pillar of rock in mine shaft. Miner abseils down underground rock wall. UNITED STATES: 1940s: Mine train passes through weighing station. Mine notes down weight of rock. UNITED STATES: 1940s: Machine dry crushes ore from mine. Rock falls into machine. UNITED STATES: 1940s: Revolving mill pulverises ore pulp. UNITED STATES: 1940s: wet pulp in mill filter. Lead concentrate filter process. UNITED STATES: 1940s: lead sediment drops onto conveyor from filter machine. UNITED STATES: 1940s: Man sets fire to powder on machine. UNITED STATES: 1940s: Factory workers clean out blast furnace UNITED STATES: 1940s: Vehicle carries vat of boiling liquid along tracks to processing station. Transfer of lead to refinery. Metal poured into container in factory. UNITED STATES: 1940s: factory operator scoops metal from racks on machine. Man skims molten metal with paddle UNITED STATES: 1940s: lead in telecommunication wires and structures. UNITED STATES: 1940s: Animation of digger moving rocks from mine shaft. Two miners install scaffolding against mine shaft rock. UNITED STATES: 1940s: Miner sets up small drill in underground shaft.