What is the minimum distance permitted between shaft and slope openings?

The minimum distance permitted between shaft and slope openings is set to ensure safety and structural integrity in mining contexts. The correct answer is based on established regulations and safety guidelines that address the potential hazards and operational challenges posed by having these openings too close together.

By maintaining a distance of 100 feet, the risk of collisions, ground instability, and contamination between the different openings is minimized, allowing for safer operations within the mining environment. This distance also helps in maintaining proper ventilation and reducing the potential for gas buildup, ensuring a safer working atmosphere for personnel.

The specified distance helps to provide an adequate buffer for equipment movement and reduces the risk of interference between the two types of openings, which is crucial for safe operational procedures and effective emergency response strategies in case of incidents. Overall, adherence to this minimum distance aligns with best practices and regulatory requirements to promote the safety of workers and the efficiency of mining operations.