Mine safety in coal mines, which in turn can initiate more extensive coal dust explosions. For this reason, rock dusts such as limestone dust are spread throughout coal mines to diminish the chances of coal dust explosions as well as to limit the extent of potential explosions, in a process known as rock dusting. Coal dust explosions can also begin independently of methane gas explosions. Frictional heat and sparks generated by mining equipment can ignite both methane gas and coal dust. For this reason, water is often used to cool rock-cutting sites. Miners utilize equipment strong enough to break through extremely hard
Centralia mine fire who worked for the Department of Mines and Mineral Industries (DMMI), became concerned about the pit when he noticed holes in the walls and floor, as such mines often cut through older mines underneath. Segaritus informed Joseph Tighe, a Centralia councilman, that the pit would require filling with an incombustible material. The town council arranged for cleanup of the strip mine dump, but council minutes do not describe the proposed procedure. It is speculated that the process—setting it on fire—was not specified because state law prohibited dump fires. Nonetheless, the Centralia council set a date and hired five members of