China Mining News reported on May 23rd that the national standard GB50830-20 13, edited by MCC North Engineering Technology Co., Ltd. and co-edited by MCC Tianchang International Engineering Co., Ltd., Northeastern University, Wuhan Institute of Geotechnical Mechanics of Chinese Academy of Sciences, Meishan Metallurgical Development Co., Ltd., Luzhong Metallurgical Mining Co., Ltd. and Pangang Group Mining Co., Ltd., was officially released a few days ago. This specification has been implemented since 20 13 10 1, and some provisions are mandatory.

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