Management principles are: 1. For mines that have the possibility of spontaneous combustion, the geological report submitted by the geological department to the design department must have the content of “the natural inclination of mineralsâ€; 2. Each mine must prepare a fire prevention plan while preparing the mining plan; Third, implement the principle of prevention, and must adopt corresponding fire prevention measures in mining design; 4. The mines that are self-igniting and igniting should grasp the ignition period of the ore as much as possible in order to speed up the recovery and carry out intensive mining. Each stope or panel is to be fully harvested before the ignition period. Hair Dryer ,Blow Dryer,Best Hair Dryer,Ghd Hair Dryer Ningbo VGR Electric Appliance Co., Ltd. , https://www.vgr-pro.com