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Lots of noise, don't find anything

pplinker

New member
Searching a construction site where they tore down houses, half a block in size. Two house sites are trashy but I've found stuff. On one side near a side road, there are lots of orange broken bricks under the ground and the backhoe mostly uncovered them. It looks like it was an old brick walkway. Also black dirt like coal or something was burned there. It seems like this is an old area and should be producing some finds. But when it seems like a good signal and dig, there's nothing there. Sensitivity is about 20. I've tried ground balancing. Detector is minelab 705. Have been using 3 kHz 9 inch and coiltek 3khz. I might try the 6 inch HH and see if that does anything.
 
If you get your coil over a fire pit, it will ring :) The burned soil is your "target" . Even the pinpointer will ring if you don't ground balance it properly.
This is one way of discovering lost homesteds in forests and remote locations.


Also, old bricks, hand made potery or ceramics can give you a signal ... burned ground with a facelift :D

Good luck !
 
Thanks for the reply, Bonel. Yeah sounds like what you're saying. The pin pointer sounds off like there's something on the surface of the hole, but can dig the hole wider and wider and not find anything but the burnt dirt. So there's probably stuff there, but the detector can't pick it out when the soil is burned.
 
Most of the times, itțs nothing but the burnt soil.
But like Ițve said ... burnt soil means a camping spot, an old settlement, even ancient if youțre in europe :)
The first and the last time I had to deal with it, some roman finds came up ...
 
Good job on the roman finds!
 
Based on what you said about the houses being old, I am sure they were either built on a crawl space, or had full or partial basements. Where these houses are torn down, they bring in fill dirt to fill in the crawl space, or basement, to make the site safe. --- Thus, you are indeed wasting your time searching through fill dirt. That dirt most likely came from 4 to 20 feet below the surrounding surface level, and depending on where you live, is probably mostly clay. For metal detecting purposes, you should consider it to be sterile, and not waste your time.
 
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