Gilman Mine, Gilman, Colorado
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41) Drilling
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Miner using a compressed air rock drill at the Gilman Mine. A battery operated miner's light is attached to his helmet, with the cord running to the light.
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At 16 level, the ore train would dump rock into the large pit (Grizzly) at the bottom of which was located a jaw crusher. The crusher would send the ore into the ball mill and rod mill where the ore was pulverized to a fine powder.
Inside the ball mill, there would be ore and steel balls, approximately 10 in. in diameter. As the mill rotated, the ore was crushed by the balls. Eventually, the balls would wear down and Bob Riggle remembers his dad...
44) Gilman
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Gilman from a distance. The main mine shaft is at left in the photograph with mine timbers stacked below and to its right. U.S. Highway 24 is at the top.
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Belden, at the bottom of the Eagle River Canyon, taken from the surface tram. The white building across the Eaagle River is the power plant. Drying facilities are on the left hand side.
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This is the bottom of 18 level where water has been allowed to infiltrate the lower levels beneath it.
47) Mucking machine
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Air operated mucking machine. The scoop goes over the mucking machine and empties the ore into the car behind. Miners also used these cars to move mining timbers throughout the mine. The machines and cars ran on rail tracks.
48) Gilman
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Gilman from above U.S. Highway 24, showing entrance into the town. The main mine shaft is at left in the center of the photograph. There are no stairs up to the road for the bottom row of houses so this may be during their construction.
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View from the surface tram looking down toward Belden.
50) Jack Johnson
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Jack Johnson, surveyor, checking calculations at his desk. Survey crews worked both in the Gilman Mine and at Belden, as well as on the general property of New Jersey Zinc, Gilman.
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Underground machine shop at the Gilman Mine with John "Smiles" Doyle on the left and Bob Enzenroth on the right. An open forge is on the left.
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Frank Jones using one of the lathes to cut centers on the shaft of a bucket elevator tail pulley used in the Milling Department.
56) 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.
58) Adjusting valves
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Dick Sayers (left) and John Skinner discussing the adjustments to equipment. A good view of the headlamp attachment to the battery pack carried on one's belt.
59) Rail ore cars
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Ore cars full of ore lined up on the rails, waiting to go to the crushers.
60) Gilman
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Gilman taken from the other side of the Eagle River Canyon. The main mine shaft is at right of center.
