Thus far no effective means of monitoring chemical weapons production has been developed, in part because there are so many commercial chemical facilities that could be utilized for producing chemical weapons precursors.

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At the time it said the hospital followed a "strict regime of continual chemical dosing, thermal disinfections and comprehensive monitoring of the extensive water distribution system".

BBC: Legionella bacteria

Examples: Sensors to sniff potential chemical weapons will improve industrial processes and environmental monitoring.

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As the Internet spread like a virus in the 1990s, hundreds of utilities, chemical factories, wastewater plants and the like went online to enable remote monitoring and more instant communications.

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The monitoring group found a "strong possibility" that the fainting was caused by chemical exposure and cited excessive overtime and insufficient drinking water as other factors.

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The monitoring group found a "strong possibility" that the fainting was caused by chemical exposure and cited excessive overtime and insufficient drinking water as contributing factors.

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Hossam Amin, the former chief of Iraq's National Monitoring Directorate, may be able to provide information on the whereabouts of Iraq's suspected stocks of chemical and biological weapons or of ousted leader Saddam Hussein.

CNN: GROUND WAR