Hollinger Shaft Practice

HOLLINGER mining operations have required development by 24 vertical shafts having a total length of 28,160 feet. Seventeen of these are sunk from surface and seven are interior shafts. Four surface shafts and three interior shafts are now active and, excepting the recently completed new main ore-hoisting shaft, the remainder are either abandoned, or are used for passes or for ventilation.
Keywords: Cost, Costs, Douglas fir, hoist, shaft, steel, timber, Hoists, Rope, Ropes, Shafts, Skips, steel, Steels
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