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One image of the instillation of cribbing in a ventilation shaft at Falconbridge Nickel Mines in Falconbridge, Ontario.

One image of the instillation of cribbing in a ventilation shaft at Falconbridge Nickel Mines in Falconbridge, Ontario.

One image of various tools resting on a trimming collar in a ventilation shaft at Falconbridge Nickel Mines in Falconbridge, Ontario.

One image of reinforced concrete and a wooden walkway in a ventilation shaft at Falconbridge Nickel Mines in Falconbridge, Ontario.

One image of two miners constructing a ventilation shaft at Falconbridge Nickel Mines in Falconbridge, Ontario. The miner on the right can be seen drilling down holes in a timber square set with a jackleg drill. The leg piece of the jackleg drill has been removed.

One image of three miners installing wooden brattices in a ventilation shaft at Falconbridge Nickel Mines in Falconbridge, Ontario.

One image of miners building a lumber slide located near the opening of a ventilation shaft at Falconbridge Nickel Mines in Falconbridge, Ontario.

One image of two miners using a mucking machine to clear the tracks at Falconbridge Nickel Mines in Falconbridge, Ontario.

One image of miners constructing a ventilation shaft at Falconbridge Nickel Mines in Falconbridge, Ontario.

One image of a boiler at Falconbridge Nickel Mines #5 heating plant in Falconbridge, Ontario.

One image of miners working on an exhaust shaft outside Falconbridge Nickel Mines in Falconbridge, Ontario.

One image of two miners working on an exhaust fan located on a ventilation shaft outside Falconbridge Nickel Mines in Falconbridge, Ontario.

One image of a miner adjusting the ventilation heating unit at Falconbridge Nickel Mines #5 shaft in Falconbridge, Ontario.

One image of a miner adjusting the ventilation heating unit at Falconbridge Nickel Mines #5 shaft in Falconbridge, Ontario.

One image of a miner raising the grill cover of a manway at Falconbridge Nickel Mines in Falconbridge, Ontario.

One image of two closed blast and ventilation doors in a mine at Falconbridge Nickel Mines in Falconbridge, Ontario.

One image of two men standing beside a derailed train engine in Falconbridge, Ontario.

One image of a derailed train engine being hoisted out of a swamp in Falconbridge, Ontario.

One print of four images of surveyors setting their lines at Falconbridge Nickel Mines in Falconbridge, Ontario. The first image on the top left includes a metal barrel sitting on top of lumber over the shaft. The second image (top right) depicts a surveyor's camera on a tripod in front of the shaft. The third image (bottom left) includes two surveyors using their camera to take pictures of the shaft and the fourth image (bottom right) includes two surveyors looking down the shaft.

One image of a rail crane hoisting a derailed train engine out a swamp as with several men watching from both above and below a hill in Falconbridge, Ontario.