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2. Unearth Your Next Hobby With These Expert-Recommended Metal ...

   www.aol.com/best-metal-detectors-uncover-buried...

   For years, the Nokta Simplex has been the gold standard for beginner-friendly metal detectors, and this new Ultra model continues that legacy. ... If you want to bring a metal detector underwater ...

3. 7 Best Metal Detectors of 2023, Reviewed by Experts - AOL

   www.aol.com/7-best-metal-detectors-2023...

   The best metal detectors have a range of frequencies to detect different metals in different locations for a chance for find lost rings, old coins and gold 7 Best Metal Detectors of 2023, Reviewed ...

4. Metal detector - Wikipedia

   en.wikipedia.org/wiki/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 pickup coil. When the coil nears metal, the control box ...

5. Underwater search and recovery - Wikipedia

   en.wikipedia.org/wiki/Underwater_search_and_recovery

   Magnetometers can be used as metal detectors: they can detect only magnetic metals, but can detect such metals at a much greater distance than conventional metal detectors which rely on conductivity; they are capable of detecting large ferrous objects over considerable distances. Side-scan sonar and multi-beam sonar.

6. Seabed mining - Wikipedia

   en.wikipedia.org/wiki/Seabed_mining

   Model of seabed mining technology. Seabed mining, also known as Seafloor mining [1] is the recovery of minerals from the seabed by techniques of underwater mining. The concept includes mining at shallow depths on the continental shelf and deep-sea mining at greater depths associated with tectonic activity, hydrothermal vents and the abyssal plains.

7. Diver finds graduation ring lost in the ocean almost 5 ... - AOL

   www.aol.com/news/diver-finds-graduation-ring...

   Then his metal detector started to beep in a different tone. Knowing the tone meant gold, he began digging. After sifting through layers of sand, dead coral and rock, Davis unearthed a ring with a ...