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2. Mill area
3. Repair shop
4. Stalagtites
8. Repair area
9. Repair area
10. Loading tipple
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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.
11. Repair shop
12. Repair shop
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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...
16. Repair shop
17. Zinc dryer
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The dryer building for zinc is at the far right. The zinc slurry would be heated and dried, leaving a very fine zinc powder. The powder was shipped in sealed box cars as it was so fine it would blow away in an open car. The rail line for shipping runs through the Eagle River Canyon (Belden area) so the final products for shipping were finished at this level.
18. Ore cart
19. Abandoned drift
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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.