Enclosed Area : Chemistry and Chemical Disasters. Any operating building, shed, magazine, railroad car, truck, or trailer that sufficiently restricts natural ventilation to allow possible accumulation of agent vapors
US Army Center for Health Promotion and Preventive Medicine CHPPM, TG 204 Glossary of Terms For Nuclear, Biological, and Chemical Agents And Defense Equipment (Section 2 - General Terms), MD, USA 2001. http://www.au.af.mil/au/awc/awcgate/army/tg204.pdf , (CBRNE Agt and Def Equip/ Gen Terms - Amer) {487}
Madison County North Carolina Government, Madison County Emergency Operations Plan Glossary (Section 2: General Terms), NC, USA 2009. http://www.madisoncountync.org/eop/Madison_EOP_PDF /Glossary.pdf, (CBRNEmr - Amer) {874}