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Shaft Sinking

Dumas is one of the Americas’ leading shaft sinking contractors having undertaken numerous shaft sinking projects in North and Latin America. From the heights of the Peruvian Andes to the extremities of the deepest metalliferous mine in North America, Dumas has the experience and knowledge to provide all shaft services.

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"Dumas is an innovative shaft construction company, they have many years of shaft construction experience and with an excellent track record on construction safety and cost controls."
C.Y. Thomas Li​​
Chairman – G.L. Tiley & Associates Ltd.
"Dumas is a professional and dependable mining contractor that provides Gowest Gold with competent personnel to efficiently complete the underground development, the underground construction, and the production mucking at our Bradshaw Deposit. The Dumas team is fully committed to our operational success and have implemented a great culture focused on safe production and the attainment of production goals."
Dan Gagnon
President and CEO, Gowest Gold Ltd.
"Dumas Contracting has been an integral part of Hudbay’s mining team at our Lalor Mine. They have provided a full-service lateral and vertical development advance, construction and mechanical team that works closely with our people, embracing Hudbay’s core values and our “one team one vision” approach to work management. Lalor has transitioned from a base metal mine to a gold operation, and mining of the gold and copper-gold zones at current production rates would not have been possible without the full support of the Dumas team."
Rob Carter
Vice President, Manitoba Business Unit, Hudbay Minerals Inc.
"Dumas Contracting has been a key partner at Hudbay’s Lalor Mine, providing full-service development, construction, and mechanical support aligned with our “one team, one vision” approach. The successful transition from base metals to gold production at current rates would not have been possible without Dumas’s support."
Rob Carter
Vice President, Manitoba Business Unit, Hudbay Minerals Inc.
“Major Drilling has partnered with Dumas on multiple projects. The expertise within each company have created a synergy that compliments both groups to provide superior performance for our clients on Projects throughout North America.”
Rocky McLellan
General Manager North American Underground Operations
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  • 65 Queen St West, Suite 910 Toronto, Ontario M5H 2M5
  • +1 416 594 2525
  • +1 416 594 9369
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