How can mine explosions be effectively prevented?

The prevention of mine explosions is critically linked to the management of atmospheric conditions and the use of safe practices. Utilizing rock and dust to minimize the presence of flammable substances, adequate ventilation to ensure the circulation of fresh air and dilution of any potentially explosive gases, and the safe management of electrical equipment are essential components.

Ventilation is especially important as it helps control methane levels, which can accumulate in mining operations and create an explosive environment if not properly managed. Moreover, using rock and dust can help suppress the risk of dust explosions that may occur in the presence of firedamp. This comprehensive approach, integrating environmental controls with operational safety practices, is fundamental to reducing the risk of explosions underground.

The other options would not promote a safe mining environment. Allowing more workers underground could increase risk in an already hazardous area. Ignoring methane levels directly contradicts the very principles of explosion prevention. Reducing the number of examinations undermines the safety checks necessary to identify and rectify potential dangers, making the mining operation far less safe.