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DUMAS is a proud member of STRACON Group, delivering integrated mining solutions across the Americas with a focus on generating sustainable value for our clients through technology, innovation and operational excellence.

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Mine Infrastructure & Construction
Shaft Sinking
Engineering
Raising

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65 Queen St West, Suite 910 Toronto, Ontario M5H 2M5
+1 416 594 2525
+1 416 594 9369

65 Queen St W #910a, Toronto, Ontario, M5H 2M5

+1 416 594 2525
+1 416 594 9369

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© Dumas Holdings Inc 2026. All rights reserved

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quick links

Careers
Projects
Services
About Us
Our Team
Contact

Services

Mine Development
Mine Infrastructure & Construction
Shaft Sinking
Engineering
Raising

Contact Us

65 Queen St West, Suite 910 Toronto, Ontario M5H 2M5
+1 416 594 2525
+1 416 594 9369

English
Español (Spanish)

Facebook Linkedin

© Dumas Holdings Inc 2025. All rights reserved