What is the maximum distance that straight places may be driven beyond the last open crosscut?

The maximum distance that straight places may be driven beyond the last open crosscut is 200 feet, which aligns with safety regulations in mining operations. This limit is established to ensure that mine workings remain adequately supported and that ventilation and safety measures can be effectively maintained. Beyond this distance, the risk of encountering unsupported ground increases, which could lead to hazardous conditions for miners. The regulation serves to provide a balanced approach to maximizing production while ensuring the safety of personnel and the integrity of the mine.

Understanding this regulation is crucial for mine foremen and other safety personnel, as it instills the importance of adhering to established guidelines to prevent accidents and ensure safe working environments.