CMT mined and treated almost 2.12 million tonnes of ore to produce 23,777 tonnes of contained copper concentrate in 2009-10. The copper is mined using a sub-level caving mining method and work is carried out at 1000 meters below the original surface (600 meters below 0m Australian height datum 2000RI).
Primary crushing takes place underground and ore is then automatically hoisted up a 600 metre shaft to be transported to the concentrator on a 1.2 kilometer overland conveyor belt.
In the plant, the ore is crushed using three stage crushing, ground down to a fine slurry and the copper sulphide minerals are then concentrated.
After filtration, the concentrate is transported to Burnie port from where it is exported to Sterlite’s copper smelter in Tuticorin, India.