The Copper Mines of Tasmania Pty Ltd (Earlier known as Mount Lyell Mining Company Limited (MLMC) was founded in 1883 and full scale production commenced in 1896. Mount Lyell is the oldest, continually operating mining field in Australia.
This mine was acquired in 1999 by Monte Cello BV, which became a subsidiary of Vedanta Ltd (formerly Sesa Sterlite Ltd), in 2000 when it was acquired by Vedanta to supply part of its copper concentrate requirement for its smelter. Since its acquisition by Vedanta, sterlite copper smelting capacity has increased from 2.0 million TPA to 2.7 million TPA.
At present, underground sub-level caving mining is being carried out at 1000 meters below the original surface (600 meters below 0m Australian height datum 2000RI).
It produces approx. 30,000 tonnes per annum of contained copper (Cu) in concentrate. It has produced more than 1.8 million tonnes (Mt) of copper (Cu) and 62 tonnes of gold (Au) and 1,300 tonnes of silver (Ag) till date.