What is the acceptable level of oxygen concentration in a mine?

The acceptable level of oxygen concentration in a mine is crucial for the safety and health of miners. A range of 19.5% to 23.5% is considered standard in mining operations. This range ensures that there is enough oxygen to sustain normal breathing while also preventing risks associated with excess oxygen concentrations, which can promote fire hazards.

Oxygen levels below 19.5% can lead to hypoxia, impairing cognitive and physical functions and increasing the risk of accidents. Conversely, levels above 23.5% can create an unsafe environment due to the heightened risk of combustion. Therefore, maintaining oxygen levels within this specified range ensures both safety and operational efficiency in mining environments.