Hindustan Copper Ltd is an India-based copper production company. It is engaged in exploration, exploitation, mining of copper and copper ore including beneficiation of minerals, smelting and refining. The company markets copper cathodes, copper wire bar, continuous cast copper rod and by-products, such as anode slime, copper sulphate and sulphuric acid. More than 90% of the sales revenue is from cathode and continuous cast copper rods. The company's mines and plants are spread across four operating units, namely in the states of Rajasthan, Madhya Pradesh, Jharkhand and Maharashtra.