The Bracemac-McLeod deposits comprise a cluster of polymetallic volcanogenic massive sulphide (VMS) lenses similar to other deposits mined historically in the Matagami mining camp, except for their generally thinner and complex morphology. The deposits are located 4.5km southeast of Glencore's Matagami concentrator, at depths ranging from 100m to 1,400m below the surface.

The depth and geometry of the delineated resources permit the use of a longhole mining method with either a transverse or a longitudinal access to the orebody. This approach fits with the relatively small tonnage of the Bracemac-McLeod deposits and the proposed waste rock management program, which provides for the development waste rock to be used as rockfill in underground stopes.

Ore will be stored on an ore pad at the mine site, and trucked to the recently refurbished Matagami Lake Mine (MLM) plant, where it will be processed using a flotation process. Recovery rates at the mill are estimated at 92% Zn, 86% Cu, 47% Ag and 29% Au (precious metals will report to the copper concentrate).