论文部分内容阅读
近年来,地质部系统探明每吨矿物储量中坑探工作量没有减少,坑探工作费用在固体矿产野外工作总费用占14~16%,从事坑探工作的总人数已超过2万人。根据长期远
In recent years, the Department of Geology has systematically ascertained that the pit exploration workload per tonne of mineral reserves has not been reduced. The total cost of pit exploration work in the field of solid minerals accounts for 14 to 16%, and the total number of people engaged in pit exploration work has exceeded 20,000. According to the long term