云铜集团1996年由国家第一个五年计划时期即先后开始建设的云南冶炼厂、东川矿务局、易门矿务局、大姚铜矿、牟定铜矿合并组建而成。经过几十年的开采和运营,所属矿山企业资源枯竭,冶炼企业设备老旧,结构矛盾突出,社会负担沉重,年最高亏损额达1.5亿元,是云南省和中国有色金属工 Yunnan Copper Group was established in 1996 by the Yunnan Smelter, Dongchuan Mining Bureau, Yimen Mining Administration, Dayao Copper Mine and Mouding Copper Mine, which started construction successively in the first five-year plan of the country. After several decades of mining and operation, the mining enterprises owned by them have been depleted in resources, smelting enterprises have old equipment, prominent structural contradictions, heavy social burdens, and their annual maximum losses have reached 150 million yuan. This is a result of Yunnan Province and China Nonferrous Metal Industry