Digital 'canaries' to monitor air quality in Australian-first mine trial - ABC News
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Mydome Canary Gas Alarm | Accurate Natural Gas Detector With A Loud Alarm & Digital Display, Designed To Detect Combustible Gas Leaks Including LPG, Butane, Propane & Methane In The Home :
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History in gas detection: Coal Mine Canaries & Flame Safety Lamps
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What killed the canary? | Engineer Live
Canaries As Poisonous Gas Detectors | Amusing Planet
Mydome Canary Gas Alarm | Accurate Natural Gas Detector With A Loud Alarm & Digital Display, Designed To Detect Combustible Gas Leaks Including LPG, Butane, Propane & Methane In The Home :
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