The Earth’s atmosphere is made up of a mixture of gases. On the surface of the Earth, the ratio of these gases stays the same. Surface events, such as fires, explosions, volcanic eruptions and even animals and plants breathing, can have an effect on the proportions of these gases in the air. These effects are usually short-lived and will only affect a small area, because unusual gas concentrations are quickly dispersed by wind and air currents.
Coal mines are confined spaces, and abnormal gases do not always have the chance to disperse in the same way. Some gases may build up in the mine, and can cause danger to people working underground.
To learn how miners detected and dealt with gases, follow the pdf. below, provided by the National Coal Mining Museum for England:
For more information on our wonderful heritage partner, the National Coal Mining Museum for England, follow the link below: