How far must flammable materials be kept from mine openings?

• A. 20 meters
• B. 30 meters
• C. 40 meters
• D. 50 meters

Answer: (B)

The requirement to keep flammable materials at least 30 meters away from mine openings is crucial for ensuring safety in mining operations. This distance is established to reduce the risk of fires and explosions that could potentially arise due to the presence of flammable materials in proximity to areas where sparks or heat may be generated, such as mine entrances and ventilation shafts.

Maintaining a buffer zone helps to prevent the ignition of these materials, which can lead to hazardous situations not only for mining personnel but also for the structural integrity of the mine itself. It creates a safety margin that allows for adequate control measures to be employed should any flammable substances inadvertently come into contact with an ignition source. Therefore, adhering to this 30-meter distance is a key compliance aspect of mine safety regulations, designed to protect workers and maintain safe operating conditions.