(3) Hindustan Copper limited (HCL), a public sector enterprise of the Government of India was incorporated on 9 th November, 1967 . It has the distinction of being India's only vertically integrated copper producing company encompassing mining, beneficiation, smelting, refining and casting of refined copper metal. Hindustan Copper Ltd. (HCL) was incorporated on 9 November 1967 to take over the plants and mines at Khetri, Kolihan in Rajasthan and Rakha Copper Project in Jharkhand from National Mineral Development Corporation. The central office is located at Kolkata which is the capital of the West Bengal state in India.