How should the end of the primacord line be handled in practice?

• A. It should remain open for ease
• B. It should be tied back to a loop
• C. Connected directly to the explosive
• D. Left loosely hanging

Answer: (B)

The appropriate handling of the end of the primacord line, specifically tying it back to a loop, is crucial for safety and effectiveness in blasting operations. This practice ensures that the end of the primacord is secured, reducing the risk of accidental detonation or interference from environmental factors such as wind or movement. Additionally, tying the end to a loop can prevent dirt and debris from entering the line, which could potentially compromise the integrity of the primacord.

Securing the end in this manner facilitates organized and controlled detonation processes, contributing to the effective management of blasting activities in mining operations. Proper handling practices are essential for maintaining a safe working environment, as they help minimize hazards associated with explosives and ensure compliance with established safety standards.

The other methods of handling the end—such as leaving it open for ease, connecting it directly to explosives, or leaving it loosely hanging—introduce various risks, including unintentional ignition sources or obstructing the work area, thus underscoring the importance of the chosen method.