专利名称：Mining method发明人：Xia Zhao申请号：US15109268申请日：20150722公开号：US09739146B2公开日：20170822
专利附图：
摘要：The present invention provides a mining method. The method includes: dividinga mining region into a plurality of federated mining regions; performing an open-pitmining operation in each of the federated mining regions and forming a pit in each of thefederated mining regions; performing an underground mining operation on a slope of
the pit and forming a plurality of excavated tunnels; and backfilling a pit of a previousfederated mining region with a spoil of a subsequent federated mining region.
申请人：Xia Zhao
地址：Xining CN
国籍：CN
代理机构：Renner Kenner Greive Bobak Taylor & Weber
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