Particles produced when organic or inorganic materials are crushed, abraded or ground; protected against in the workplace by dust masks and respirators
Tsavo Media Inc. (Ed.), Work Safely, Glossary of Safety Terms U-Z, Ontario, Canada 2012. www.worksafely.com/glossary/glossary-a-e.aspx, (WrkPlc Sfty - Canad) {486}