In the oxidized part of the primary mineralization at the Esperance and the Saint-Elie’s sites, CME and SMSE both uses open-pit mining.
Lateritic weathering makes the rock digging easy to use excavators without the need to use explosives. Maximum open-pit depth can reach fifty meters.
The ore is hauled by trucks to a treatment plant. There it is transformed into a pulp before undergoing a particle sorting followed by a crushing phase. Gold is released from its quartz and clay matrix can then be recovered using automated Knelson type centrifuges. The concentrate is then refined on a shaking table and the collected gold dust is melted into ingots.