China Minmetals Corp, Chenzhou, Hunan Province Huangsha Ping Lead and Zinc Mine Project

2021-07-28

Project features:

Tunnel construction space is small, large dust, large humidity

Project results:

Time for 21 days, 75mm caliber end holes, 68°dip angle, successfully drilled to 801.6 meters and smoothly ended.

China Minmetals Corp, Chenzhou, Hunan Province Huangsha Ping Lead and Zinc Mine Project.jpg

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