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