What is one technique used to ventilate mines?

One effective technique used to ventilate mines is the use of exhaust fans to pull stale air out of the mine. This method ensures that harmful gases, dust, and heat are efficiently removed from the underground environment, promoting a safer atmosphere for miners. By creating a negative pressure in certain sections of the mine, these fans facilitate the influx of fresh air from other areas or the surface, further enhancing air quality and circulation. This is particularly important in deeper or enclosed mine sections where natural airflow might not be sufficient to maintain a healthy environment, as well as for controlling temperature and humidity levels, which can be critical for worker safety and comfort. Proper ventilation is crucial in preventing the accumulation of explosive gases and ensuring that miners can work safely.