Before revision: Non-explosive demolition agents are chemicals that are an alternative to explosives and gas pressure blasting products in demolition, mining, and quarrying .2003 American Society of Civil Engineers, Controlled Concrete Demolition Using Expansive Cracking Agents URL (dead link 31 January 2022)
After revision: Non-explosive demolition agents are chemicals that are an alternative to explosives and gas pressure blasting products in demolition, mining, and quarrying .