The paper introduces the gold mining of mines in Chifeng area and the research achievement of mining method.

介绍了峰地区黄金矿山开采情况及采矿方法研究成果。

youdao

The paper introduces the gold mining of mines in Chifeng area and the research achievement of mining method.

介绍了峰地区黄金矿山开采情况及采矿方法研究成果。

youdao