How is primacord typically destroyed?

• A. By burying it underground
• B. By burning it on a spool
• C. By burning it strung out in parallel lines
• D. By soaking it in acid

Answer: (C)

Primacord, a type of detonating cord used in blasting operations, is destroyed by burning it strung out in parallel lines, which is considered the safest and most effective method. This technique allows for a controlled burn that mitigates the risk of accidental detonation and minimizes the hazards associated with an uncontrolled explosion.

When the primacord is laid out in parallel lines, it ensures that the flames can consume the material without creating a concentrated heat source that might initiate a blast. This method also allows for proper ventilation and the dispersal of gases produced during combustion, further enhancing safety.

Other methods, such as burying it underground or soaking it in acid, do not provide the same level of control or safety. Burning on a spool, while it may seem practical, poses significant risks of creating a significant and uncontrolled detonation hazard.