Brands Commonly Used for Ordnance

Geometries G-858 is another usefiil instrument. Likewise, the GEM 3 is also useful. Newer systems are being developed constantly and any omission is due to lack of famiharity hy the author and not an indication of disapproval. 

New computer programs are available that can show metal mass and depth. Thus, selection of an instrument may be less important than what program is used. The Naval Research Laboratory in Washington, DC, has developed a superb metal detection system. They can do work on federal property but have a civilian contractor. Black Hawk, for work on non-federal sites, the FXJDS, or transferred ranges. 

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