NING Jin-sheng
Sixth Branch of Shanxi Metallurgy Rock and Soil Engineering Controlling CorporationZHU Shu-lan
Third Institute of China Metallurgy Geology Exploration BureauWU Xian-ling
Sixth Branch of Shanxi Metallurgy Rock and Soil Engineering Controlling CorporationXI Sheng-qiang
Machinery Plant of Beijing Municipal Engineering Administration OfficeTU463