Zinc mining
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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]
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Staging area in the mill at Gilman for the chemicals used to process the mined ore. The fork lift was used to lift pallets of the chemicals for use in the mixing machines. [Similar to 2007.008.072]
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Installing new transformers at Gilman. The tanks at the back of the unit are for cooling purposes.
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Crane at Gilman power plant moving transformers. The building in the left background housed the post office, mercantile, and grocery store.
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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.
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Cyanide mixing machine in the mine at Gilman. Cyanide was shipped to the mine in 50 gallon drums and required the use of rubber gloves in handling.
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Electrical transformers, prior to unloading at Gilman, on a Weicker transfer and storage truck.
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Emmet Flaherty preparing to pre-heat two blank pieces of hollow drill steel. In the background is an automatic oil-fired forge which will bring these blanks to an exact temperature for forging. From the hollow drill blanks, finished pieces of lugged steel are formed for use in rock drills.
11) 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 area for the zinc ore. Water valves are shown at the bottom of the table.
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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.
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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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Fork lift loading soda ash onto a platform for use in the soda ash machine. The fork lift was battery operated.
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The town of Gilman circa 1953. The majority of the population lived in company housing and paid rent to the New Jersey Zinc Company. The company was responsible for maintenance on the homes and had carpenters, etc., working on staff for the upkeep of these properties. [related to neg. 2012.006.076]
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Gilman power plant under renovation. The house in the immediate left background is where the Enzenroth family lived. Directly behind and to the left of the Enzenroth house is the Hess house. The Schlegel house is to the right of the Hess house. The school fence is visible at upper right.
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The town of Gilman showing the main shaft down into the mine in the left center of the picture. Mining timbers are stacked in the yard to the immediate right of the main shaft. Highway 24 is on the far left going toward Red Cliff.
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Installing transformers and connecting terminals to main power line.
