Why are zero delay detonators prohibited in mining?

Zero delay detonators are prohibited in mining primarily because they allow for immediate blasting initiation. This characteristic can lead to dangerous situations, as the potential for multiple detonations occurring in rapid succession increases the risk of premature explosions and uncontrolled blasts. In an underground mining environment, where safety is paramount, the immediate initiation of detonation can compromise the stability of tunnels and surrounding rock, posing significant hazards to miners and equipment.

Additionally, controlled and timed detonations ensure that the blast wipes out material at a calculated time interval, rather than all at once, which aids in managing the vibrations and shockwaves produced. This controlled manner reduces the likelihood of injuries and improves the effectiveness of the blasting process. Therefore, zero delay detonators are deemed unsuitable for mining operations where safety and controlled explosive reaction are crucial.