Zijin Mining Group is one of the largest gold producers in China. The company owns eight gold and copper mines. It operates the Zijinshan Gold Mine (which is the largest open-pit gold mine in China) and three other gold mines in production. The company also owns copper and gold mines under construction. In addition to the development and exploration of mining resources, Zijin Mining provides services in geological studies and mining consulting. Although its operations are largely confined to China, Zijin Mining has expanded its exploration activities to other countries. In 2011 it acquired a controlling stake in Altynken, a gold miner in Kyrgyzstan, for $66 million.