Colchester barracks: Four taken to hospital after chlorine spill - BBC News
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FS Systems Chlorine Alarm and Voice Evacuation Systems - YouTube
Colchester barracks: Four taken to hospital after chlorine spill - BBC News
/cloudfront-us-east-1.images.arcpublishing.com/gray/N2WMVKGSXFHINBJVRP42FOFIJ4.jpg "Chlorine alarm sounds again at water treatment plant")
Chlorine alarm sounds again at water treatment plant
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Accidental Release of Chlorine from a Storage Facility and an On-Site Emergency Mock Drill: A Case Study
Civil defense siren - Wikipedia
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