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"All horizontal or subhorizontal development openings made in a mine have the generic name of drift. These are simply tunnels made in the rock, with a size and shape depending on their use—for example, haulage, ventilation, or exploration." -- Encyclopedia Brittannica This drift is at the 16 level in the Gilman mine and has been abandoned. Water dripping through the ceiling carries minerals, forming stalagtites and stalagmites.
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Lucille Riggle is seated at Bob Riggle's desk in the warehouse. Bill Burnett is at left rear; Alberta Limatta is at far right.
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Standing above the cavern in the Gilman mine where the ball and rod mills are housed. The mills are on an incline for gravity feed down to the loading docks. At the center right of the photo, steel rods are stacked for use in the rod mill.
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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...
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At right is the ball mill. At left is the rod mill. The mills are on an incline for gravity feed down to the loading docks. At the center right of the photo, steel rods are stacked for use in the rod mill.
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This is the bottom of 18 level where water has been allowed to infiltrate the lower levels beneath it.
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From left, Bill Burnett, Hawkeye (Gordon) Flaherty, and Ella Burnett are standing in front of cap lamp units at 16 level in the Gilman mine. Alberta Limatta is at far right. The shaft house had a 2 cage lift system, taking miners between levels. It could work with one cage going up and the other down, or with just one isolated cage moving. Cap lamps were put on before going into the mine and returned upon coming out.
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Berniece Chadwick, Alberta Limatta, and Ella Burnett with Hawkeye and Jean Flaherty behind them in the cap lamp room. The belts visible on Berniece and Ella hold a battery pack on the back with a power cord attaching to the lamp. Each lamp had 2 filaments so that if one burned out, the power could be switched to the second.
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Drills and lathes in the repair area. Welders and machinists were employed by New Jersey Zinc to maintain and recycle equipment. During the 1950s, there were three shifts working each day to maintain production levels.
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10) Lathes
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A closer look at the lathes.
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The lathes were for working steel. They could straighten bent drill steel, put new ends on the rods and send them back for reuse. The Gilman shop reused as much equipment and supplies as was possible.
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The loading tipple is at far left where products would be transferred to railroad cars for shipment. The "Bull Gang" managed loading and maintenance in the Eagle River canyon. Robert E. Riggle was Bull Gang chief at one point. The stairway at center goes into a mine entrance at about the 17 level. There are 80 feet between levels in the Gilman mine.
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13) Mantrip
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Loading up for transportation to lower levels in the mine. The 16-10 incline goes down to the 18 level (at one time it went all the way to the 24 level). Transporting people was called a mantrip. In the front seat are Terry Pierson, Ella and Pete Burnett. Victor Pierson is standing at left in the yellow helmet.
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Part of the mill area in the Gilman mine, showing separation tanks for lead, copper and zinc.
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An ore car at right, going out to the main pit (Grizzly). Once it arrives at the pit, the rocker wheel on the cart is elevated by the track and dumps the contents of the cart into the pit.
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From far left: Chuck Colby, Berniece Chadwick and Davy Burnett. Jean Flaherty is at far right.
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Storage shelves in the repair area.
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Beth McIlnay, Lucille Riggle and Everett Limatta (far right) are standing in the repair shop in the Gilman mine.
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All repairs to equipment were done in the mine's repair shop. In this photo there is milling machinery to work steel. A rack of steel bars is at far right.
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More equipment in the repair shop in Gilman.