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  2. Metal detector - Wikipedia

    en.wikipedia.org/wiki/Metal_detector

    U.S. Army soldiers use a military standard metal detector. A metal detector is an instrument that detects the nearby presence of metal. Metal detectors are useful for finding metal objects on the surface, underground, and under water. A metal detector consists of a control box, an adjustable shaft [dubious – discuss], and a variable-shaped ...

  3. Cargo scanning - Wikipedia

    en.wikipedia.org/wiki/Cargo_scanning

    It is often used for scanning of intermodal freight shipping containers. In the US, it is spearheaded by the Department of Homeland Security and its Container Security Initiative (CSI) trying to achieve one hundred percent cargo scanning by 2012 [ 1 ] as required by the US Congress and recommended by the 9/11 Commission .

  4. Cost Of Adding Metal Detectors To Subway Stations In NYC - AOL

    www.aol.com/cost-adding-metal-detectors-subway...

    So, what would it cost to add metal detectors? Each metal detecting machine costs about $2,200, and the city would need four turnstiles per station. That adds up to $8,800. Multiply that by the ...

  5. The Best Metal Detectors to Uncover Buried Treasure - AOL

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  6. Explosive detection - Wikipedia

    en.wikipedia.org/wiki/Explosive_detection

    The use of colorimetric test kits for explosive detection is one of the most simple methods for officers, and widely used method for the detection of explosives. . Colorimetric detection of explosives involves applying a chemical reagent to an unknown material or sample and observing a colo

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