What is the principal danger while mine fires are being sealed?

During the sealing process of mine fires, the principal danger is the risk of gas explosion. When a fire occurs in a mine, it often leads to the production of harmful gases such as carbon monoxide and methane. Sealing the fire can create conditions that prevent these gases from escaping, leading to the potential for a build-up of explosive mixtures. If these gases reach a certain concentration and then encounter an ignition source, it could result in a catastrophic explosion.

Understanding this risk is critical for mine safety, as the presence of these flammable gases poses a significant threat to personnel and infrastructure. Proper monitoring and ventilation strategies must be employed during the sealing process to minimize the accumulation of such gases, ensuring the safety of workers and the stability of the mine.