"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.“
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.