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  • Dumas Mining Website
    (416) 594-2525
    65 Queen St West Suite 910, Toronto, ON M5H 2M5

    Dumas Mining is a leading full-service underground mining contractor operating across the Americas. Since 1994, it has grown to become one of Canada’s largest mining contracting firms, offering mine construction, development, production mining, services, and engineering. The company emphasizes safe…