Ore industry
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Part of the soda ash mixing machine at the Gilman Mine. Soda ash was used in processing the ore along with copper sulfate. An electric motor to power the mixer sets atop the mixing
bucket.
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A mine conveyor used for transporting the zinc ore from level to level and to the crusher in the mine. Conveyors were used extensively in the mine. [related to photo 2007.008.067]
63) Piping
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Underground pipes used to move water and chemicals for the ore milling processes. A group of fans is seen in the bottom background, providing some of the ventilation in the mine at Gilman.
64) Soda ash machine
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Platform leading to the soda ash machine at the Gilman Mine. Soda ash (also called washing soda, sodium carbonate Na2CO3) was one of the chemicals used to clean the ore. The large pipe on the left is for ventilation of the soda ash work area.
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Fork lift loading soda ash onto a platform for use in the soda ash machine. The fork lift was battery operated.
66) Chemical storage
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Lime, soda ash and copper sulfate (used in the zinc ore processing) stored beneath the mill at Gilman. Tracks used by timber trucks and ore cars run down the center of the picture. [Same as 2007.008.123]
67) Ore conveyor
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A mine ore conveyor being loaded from another level down a chute that had chains for filtering out large rocks. A miner stood near the conveyor and picked out pieces of wood and other debris.
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Steam control valves at the mill in Belden. These were located between the dryer and the loading tippel.
69) Steam controls
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Steam room controls located between the dryer building and loading tippel at Belden.
70) Mucking machine
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Air operated mucking machine preparing to load material. The scoop would go over the mucking machine and empty the ore into the cart behind. Operator controls were at the left side of the machine.
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Closeup of the flume used to dump "muck' onto the conveyor. This conveyor carried the ore to a series of crushing machines. Conveyors were used extensively in the mine. [related to photo 2007.008.090]
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Lead flotation cell separating the lead from the crushed rock. Lead and gold were removed from the muck before the zinc was separated.
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Ed Koch starting the repair and reconditioning of a rocker dump mine car. This mine car has become unserviceable since the bottom and end are worn through. The car will receive new steel section plates and be completely reconditioned.
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The cyanide injecting machine inside the mill at Gilman. Cyanide was used to clean the ore for processing. A pressure gauge is seen at the top of the injectors.
76) Rebuilt mine car
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O.A. McClain and Roy Long standing beside a completely rebuilt mine car at the Gilman Mine. An "eye" is seen with chains attached at the bottom of the cart. The eye was used to hook the mine cars together in a series of small trains for hauling ore.
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Flotation area for the zinc ore. Water valves are shown at the bottom of the table.
79) Flotation area
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Floation area for the zinc ore at Gilman. Flotation tables were used to seperate the zinc and lead from the waste in the mining process. Further processing separated the lead and the zinc.
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Flotation stations in the zinc section of the mill at Gilman. The flotation stations were part of the process of refining the zinc ore.
