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Surface Mining Equipment For Gold Mining . 2020-6-6Surface Mining Methods and Equipment. Most bauxite, iron, and copper ore is mined by open pit techniques, lead and zinc ore are principally extracted by underground mining methods, and precious metals, particularly gold and most notably in the USA and Australia, tend to be recovered in recent years.
LAWFIRM Heavy Industries Co., Ltd. China(Mainland)
Our products sell well all over the world, and have advanced technology in the field of crushing sand grinding powder.