(1) Diluting and removing pollutants, that is, diluting harmful gases and ore dust to a safe concentration with fresh air current, and discharging it into the mine.

(2) Closed fire areas, goafs, old lanes and unventilated roadways to reduce the generation of harmful gases and prevent harmful gases from spreading into the mine air. It also prevents people from suffocating and mine fires, biogas explosions, etc.

(3) Strengthen the inspection of harmful gases, master the gushing situation, regularly take air samples from the working face and the goaf into the wind tunnel, and send them to the laboratory to analyze the air composition to understand the cleanliness of the air.

(4) Reduce the generation of harmful gases and purify the wind, prohibit the use of substandard explosives, use water cannon mud and spray water when shooting; purify the wind; strengthen the management of fire areas to prevent fire, gas and coal dust explosion.

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