үндсэн нунтаглах машинууд
нунтаглах машины үндсэн үүрэг Mineral Processing Technology 2017. Dec 17 2017 The concept of automated tunnel borers isn t new Since 2012 Rio Tinto has been working with the Centre of Excellence in Mining Innovation CEMI to build shafts and tunnels at a faster rate as part of Rio s Mine of the Future initiative ...