North m88 bet Mining Company held the fourth quarter production (mechanical and electrical) technology regular meeting and scientific and technological innovation work meeting

Invited Professor Deng Guangzhe of Xi'an University of Science and Technology to give a special lecture on new coal mining technologies

A special discussion was held on the two major themes of mine power supply management experience and problems

Sunjiacha Longhua Coal Mine has prepared hot preparation for the pressure equalization ventilation system of the 30209 working face and ventilation management during the excavation opening of the 20204 working face and long-distance ventilation management of the working face