由中国有色金属学会选矿学术委员会、中国有色金属学会地质学术委员会、中国有色金属工业总公司昆明公司、云南锡业公司个旧选厂等八个单位联合召开的“第一届全国铜资源及难选铜矿利用研讨会”于1990年11月2日至5日在昆明召开。参加会议的有来自全国19个省市的专 By the China Nonferrous Metals Society beneficiation Academic Committee, Geological Academic Committee of China Nonferrous Metals Society, Kunming, China Nonferrous Metals Industry Corporation, Gejiu Yunnan Tin Company selected eight units jointly held the “first session of the national copper resources and difficult elections Copper Exploitation Seminar ”was held in Kunming from November 2 to 5, 1990. Attended the meeting from 19 provinces and cities nationwide