Is it advisable to leave the downline connected to the primacord reel during the loading of the hole?

• A. Yes
• B. No
• C. Only in dry weather
• D. Only when using a single row pattern

Answer: (B)

The advised practice is to not leave the downline connected to the primacord reel during the loading of the hole. This is primarily due to safety considerations. Keeping the downline connected while loading can create a risk of accidental detonation or premature firing if an unintended signal or disturbance occurs. It is crucial to ensure that all elements associated with the blasting operation are safely managed to prevent accidents.

In addition, disconnecting the downline helps in maintaining a clear and organized work area. It allows the crew to focus on the loading process without the potential distraction or hazard of an active connection to the primacord reel. Safety protocols in mining and blasting operations emphasize the importance of minimizing risks during the loading phase. Therefore, disconnecting the downline before loading is a standard safety procedure that helps ensure the well-being of all personnel involved.