在不久之前,作者参加地质矿产部矿产资源考察团访了加拿大。通过加拿大联邦政府能源、矿山和资源部与不列颠哥伦比亚省政府能源、矿山和石油资源部的专家介绍,并在六个矿山企业(其中五个有色金属矿和一个铁矿)的现场考察,使我们对加拿大矿 Not long ago, the author visited Canada with his delegation to the Mineral Resources Investigation Department of the Ministry of Geology and Mineral Resources. Through field visits by experts from the Department of Energy, Mines and Resources of the Federal Government of Canada and the Government of British Columbia’s Department of Energy, Mines and Petroleum and six mining companies, of which five non-ferrous and one non-ferrous, brought us To the Canadian mine