Surface Care & Maintenance (2018-Present)
Completed: In Progress
Client: Public Services and Procurement Canada (Government of Canada)
Deton’Cho / Nuna Joint Venture continues to provide services to the Mine Manager including maintenance of all surface infrastructure, water management and monitoring, electrical system maintenance, drilling support, and select demolition work.
Care & Maintenance (2005-2018)
In 2005, Deton’Cho / Nuna Joint Venture (DCNJV) was contracted by the Government of Canada to provide care and maintenance at the Giant Mine site. DCNJV’s scope included: maintenance of site facilities, equipment, underground access, and hoisting and pumping equipment; site security; bulk fuel storage demolition; select building demolition; pipe works upgrade; surface water management improvements; and operation of the effluent treatment plant.
Freeze Optimization Study (2011-2013)
Under the Giant Mine Care & Maintenance contract with the Government of Canada, Deton’Cho / Nuna Joint Venture provided construction services to support a trial project designed to optimize methods of freezing the underground arsenic storage chambers. Work included: surface drilling by a variety of methods (mud rotary, coring, and down hole hammer) and installation of piping for a mechanical freezing system; instrumentation installations; underground development required for horizontal drilling and freeze pipe installation; surface civil works and site grading; and bulkhead construction.