In order to further standardize the flow of cave mouth pre-shift meeting and dispatching meeting of construction unit, Jiama Mine requested all dispatched personnel participating in pre-shift meeting to sign for roll call on site; the shift leader or project manager should explain the existing problems and rectification requirements of the previous shift in each operation aspect; the dispatching personnel should state the production and safety requirements for each shift in each operation aspect; the safety management personnel of expansion field should dispatch task for the safety precautions of this shift; the leader and safety management personnel of appointed construction unit should state the accident cases; the record person nel should make records for the dispatched contents; each dispatching room should be equipped with the electronic screen to play the safety alert education film repeatedly before and after dispatching; the safety management personnel of expansion field should conduct random inspection on safety operation procedures of workers and so on to make the workers understand and be familiar with key safe production work, enhance the safety awareness of the staff, and make the workers changing the awareness of “Make me safe” to “I want to be safe” and “I can be safe”.