Ed-NH
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Hi all,
I hunted a farm field that I have hunted in the past. I tried an area near some ledge and found a reference marker that must have been plucked from the granite by the farmers plow. A week later I was out there again and found another one about 200 feet from where the first one was found. I also found one still intact in the granite!! At first I thought it was a cover to a huge farm septic tank or something.
These are made of a brass-like material, about the size of a small coffee can lid, about 3/16" thick. Talk about blast your ears off when you hit the signal....They had a post coming out of the back that was pressed into the granite ledge to anchor the plate to the granite. The US Navy must have done some surveying out in that area during the 1950's. I think these are a pretty cool find
More info here:
http://en.wikipedia.org/wiki/National_Geodetic_Survey
I hunted a farm field that I have hunted in the past. I tried an area near some ledge and found a reference marker that must have been plucked from the granite by the farmers plow. A week later I was out there again and found another one about 200 feet from where the first one was found. I also found one still intact in the granite!! At first I thought it was a cover to a huge farm septic tank or something.
These are made of a brass-like material, about the size of a small coffee can lid, about 3/16" thick. Talk about blast your ears off when you hit the signal....They had a post coming out of the back that was pressed into the granite ledge to anchor the plate to the granite. The US Navy must have done some surveying out in that area during the 1950's. I think these are a pretty cool find

More info here:
http://en.wikipedia.org/wiki/National_Geodetic_Survey
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