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Explosive Controlled Blasting vs Dexpan Non-Explosive Demolition

 Comparing to controlled blasting, Dexpan Non-Explosive Expansive Grout is favored by many blasters since no blasting permit required. 
Explosive Controlled Blasting vs Dexpan Non-Explosive Demolition
Explosive Demolition requires all blasters to have blasting licenses or permits. 
Explosive Demolition, Controlled Blasting seems to happen in seconds, but actually the preparation for blasting can last for months. 
In Explosive Demolition & Controlled Blasting, blasters have to deal with many dangers like explosion, noise, air blast, flying rocks.
 
Explosive Demolition vs Dexpan Non-Explosive Demolition Agent.