Shaft Sinking at the Timmins Mine

Shaft Sinking at the Timmins Mine:
Lake Shore Gold Corporation

Commodity: Gold (Au)

Dumas had an integrated role in building one of the most significant gold mines in Timmins. From the concept and design stage of the project in 2007, to the development phases, we excavated a concrete lined exploration shaft to a depth of 710 meters. The scope of work also included engineering and construction of the shaft collar, head frame and hoist infrastructure.

At the 650 meter level, we excavated the forth shaft station and lateral development drift to a 30,000 ton bulk sample zone. Dumas achieved a remarkable average sinking rate of 10.8 feet per day.

Our innovative approach prevailed in all aspects of the Timmins Gold mine shaft sinking project. The use of the Dumas designed Cryderman Tower to excavate the collar, allowed our six-deck Galloway to be lowered into the opening before the surrounding infrastructure was built. Dumas is one of the very few contractors in the world to use a six-deck Galloway with two one-boom jumbo drills. This is a recognized safe, efficient and productive working method.

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