There is a difference between mine gas supply system and ventilation system, but what exactly does it mean?

The fundamental role of the two is different. Gas supply system is generally a system that uses wind for underground equipment, such as rock drills, pneumatic picks and other equipment, which needs wind to provide power and is one of the power systems of the equipment. Ventilation system is mainly used to maintain the air in the mine, including fresh air entering the mine and dirty air discharged from the mine. To provide a suitable working environment for underground personnel and ensure the living conditions of human body. Hoisting system refers to the main shaft, auxiliary shaft and other means of transport, such as cages, skips and other equipment and their control signal systems. I'm just saying its general meaning. If you still don't understand, I will continue to add ~