In 2007, Dumas commenced work at Timmins West Mine, owned by Tahoe Resources (later Pan American Silver). The project included shaft sinking, engineering, and extensive development and raising.
Dumas played an integrated role in building one of Timmins’ largest gold mines. Scope included sinking a 5.5-metre-diameter, 712-metre-deep concrete-lined shaft; constructing the shaft collar, headframe, and hoist infrastructure; and developing multiple shaft stations. Crews advanced lateral development for a 100,000-ton bulk sample, completed raises including a 397 metre crown raise delivered ahead of schedule, and executed construction projects such as pump stations, ore handling infrastructure, and rockbreaker installations. Since 2017, Dumas has provided manpower and equipment to support ongoing production.
Scope of Work
- 712 metre x 5.5 metre concrete-lined production shaft
- Surface infrastructure, hoist, and headframe construction
- Ramp development, 625m of levels, and multiple shaft stations
- Lateral development for a 100,000-ton bulk sample
- Multiple raises, including 330–370m Alimak raises and ore/waste passes
- Ongoing manpower and supplemental equipment
