Hindustan Copper Ltd. is a central public sector undertaking under the ownership of the Ministry of Mines, Government of India. HCL is the only vertically integrated government-owned-copper producer in India engaged in a wide spectrum of activities ranging from mining, beneficiation, smelting, refining and continuous cast rod manufacturer. HCL shares are listed at Mumbai, Delhi, Kolkata, Chennai, Ahmedabad exchanges. On 31 July 2015, the Government of India announced a 15% stake sale in Hindustan Copper Limited, reducing its stake from 89.5% to 74.5%. Wikipedia