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2. Metal detector - Wikipedia

   en.wikipedia.org/wiki/Metal_detector

   Contamination of food by metal shards from broken processing machinery during the manufacturing process is a major safety issue in the food industry. Most food processing equipment is made of stainless steel , and other components made of plastic or elastomers can be manufactured with embedded metallic particles, allowing them to be detected as ...

3. Gerhard Fischer (inventor) - Wikipedia

   en.wikipedia.org/wiki/Gerhard_Fischer_(inventor)

   Although the actual inventor of the hand-held metal detector is disputed, the hand-held metal detector was made in 1925 and was first patented by Dr. Gerhard Fisher in 1931. A metal detector had been invented some forty years earlier (1881) by Alexander Graham Bell for the sole purpose of locating a lead bullet in President James A. Garfield.

4. Do metal detectors really keep schools safe?

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5. Counter-IED equipment - Wikipedia

   en.wikipedia.org/wiki/Counter-IED_equipment

   Laser IED Detection: Scientists are learning to adapt lasers to detect, or defeat, IEDs. [19] Mine detectors: A portable, hand-held or worn device to detect buried IEDs. There are many different models from several different companies currently in use worldwide by U.S. and coalition forces.

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

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7. List of metal detecting finds - Wikipedia

   en.wikipedia.org/wiki/List_of_metal_detecting_finds

   This is a list of historically significant items found by metal detecting method, only excluding magnet fishing finds, since magnet fishing is usually considered a distinctively different and separate hobby from traditional metal detecting.