What is the requirement for fire extinguishers at working sections producing more than 300 tons of coal per shift?

In working sections producing more than 300 tons of coal per shift, the requirement is for two portable fire extinguishers and rock dust. This combination is essential for adequate fire safety in a high-risk environment such as a coal mine.

The presence of two portable fire extinguishers ensures that there is sufficient access to firefighting equipment, allowing miners to quickly respond to any fire hazards. Rock dust is crucial in coal mines because it can help to suppress fires and explosions. It acts as a fire retardant, minimizing the spread and intensity of potential fires, which is particularly important in an environment where combustible materials are prevalent.

In this context, the combination of both fire extinguishers and rock dust creates a synergistic effect that enhances overall safety for workers operating in high-output coal production environments.