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Mining methods and costs at the Porcupine United Gold Mines' Rochester Mine at Timmins, Ontario

Mining practice and costs of the Vipond Mine, Timmins, Ontario

Milling methods and costs of Coniaurum Mines, Ltd., Schumacher, Ontario

Amalgamation practice at the Porcupine United Gold Mines, Ltd., Timmins, Ont.

Mining methods of Kirkland Lake Gold-Mining Co. (Ltd.), at Kirkland Lake, Ontario.

Published Year

• 1930-1939 (5) *

Subject

• Gold mines and mining--Ontario (5) *

Author

• Dumbrille, J. C. (1)
• Dye, Robert E. (1)
• Redington, John. (1)
• Tolman, J. D. (1)
• Vary, Ronald A. (1)

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