Dumas has multi-disciplined Engineering and Technical Services team that offers practical, innovative and reliable designs with the ability to oversee the entire mine infrastructure.  Our knowledge and skills allow us to design, manage and construct all aspects of underground mine infrastructure.  Our engineering team is expanded by numerous professional engineers and support personnel within Dumas that complement our Technical Services Department.  Our team has provided numerous clients assistance in the determination of business case and preparation of bankable documents.  Additionally, our technical services team has the capacity and expertise to undertake the following services, as well as procurement support, and project and construction management.


Mining Engineering

  • Concept, Pre-Feasibility and Feasibility Design, Schedule & Budgeting
  • Design, implement, monitor underground Development & Construction
  • Develop Equipment Specification & Selection
  • Process Water, Compressed Air Distribution, Dewatering, Ventilation
  • Headcover & Bulkhead Design


Mechanical Engineering

  • Layout Drawing & General Arrangements
  • Conveyances & Shaft Conveyances (Skips, Cages, Galloways, Alimak)
  • Custom Sinking Set-ups, complete Hoisting Facilities
  • Crusher Systems
  • QAQC Inspections, Stress Analysis, Reports & Certifications


Civil/Structural Engineering

  • Layout Drawings & General Arrangements
  • Portable Headframes
  • Civil Foundation Design
  • QAQC Inspections, Reports & Certifications
C.Y. Thomas Li​​
C.Y. Thomas Li​​ Chairman – G.L. Tiley & Associates Ltd.
"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.“
Dan Gagnon
Dan Gagnon President and CEO, Gowest Gold 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.
Rob Carter
Rob Carter - Vice President, Manitoba Business Unit, Hudbay Minerals Inc.
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.
Rocky McLellan
Rocky McLellan-​ General Manager North American Underground Operations​
“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.” 
Mine Development
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