Need help dowsing a map

Well I went out to the Park today and searched the areas indicated by the red lines on the 2 maps and did not find any coins, just aluminum cans and bottle caps and I made sure that I overlapped each run, so I am not sure what is happening, I do know the metal detector will go down to 12" so if they are not that deep I should have picked them up. The pictures are below.

Roger
 

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Recovering targets using electronic equipment is not always easy...even with caches.

To use a recent example. I won't mention who the T-Net member is, but this is a cache situation. The treasure hunter goes on a trip down to New Orleans vicinity, to search for caches in that boggy soil which old marsh land produced. Anyone who lives down there will know what I'm talking about. The New Orleans area caches have sunk deeper than first buried, to a deeper depth.

So, I dowse the GE maps, mark the signals of the general area. put placemarks in GE and zoom in more. Dowse them and zoom in very close. Now the treasure hunter has coordinates from the GE placemarks. He goes there with LRLS, 2-box detector, etc. Now the signals are picked up on the equipment. Well, the 4 foot probe doesn't reach, because as mentioned caches in swamp soil can be deep.

Next camera photos are dowsed where deep LRL signals, come from. Marked signals confirmed, a shallower one a 2-box detector picks up. The signals were dowsed at 8 1/2-11 feet deep. A longer probe is added to the recovery tool list...but, still may not be long enough. Now you also got pulse, LRL, and 2-box equipment and more people to dig. More photos get dowsed, the treasure hunter gets almost between the signals, but equipment detects a large circle of signal. Then there is water pockets down there too. Hopefully they got one of by now.
 

Red_Desert is there anything else that I can provide or do to help in pinpointing the gold coin better or do you think it is deeper than my metal detector will go? Although you stated that the coin was about 6-7 inches down and the soil we have here is mostly clay type so things do not sink down very fast. If I can provide anything else, let me know. Thanks

Roger
 

Ok, this is detector first. I have not done any tests like this on my new Garrett Ace 250, but did it with the old GTA 1000. The eliptical coil was more elongated or you could say narrower, on the GTA 1000. Testing in the all metal mode at 2 different parks. Starting on the beach near the waterline, in beach sand at park #1. Park #2 had an old swimming area no longer in use, at a town park pond. Digging all deep signals, especially lower iron readings, up came the treasure. at least the nickels popped up. Over 50% of those reading of foil/iron was treasure. These mostly were in the 7-8" depth range. Technology is better now, but we still need to do tests like that, all new detectors.

If you take a camera and GPS unit to mark positions of image locations, make them available for dowsing...post them or email, it does help to get close up.
 

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