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Case of overload???????

2

2wheeldevil

Active member
Lady has this plastic box of silver coins buried in her backyard and now cannot find it. Could be buried one to two feet deep.

She had another identical box that she did not bury (picture attached). I used my AT-Pro to test the readings for that twin.
I had the At Pro set at full sens., pro, zero and this is the readings I got.
Did not lower the sens. at the time but will do this.

Scanned the top of the box and got readings of 35-40.
Put the box up on the edge and got a reading of 70-72.
Pro pointer sounds off loud and clear on the box.
Tested the box with an Ace 250 and got the same results-middle of the scale in pull tab range.

Can someone tell me what is going on here?
 
I would just ask her to show you the general area where she buried it and just dig everything above iron. Especially the aluminum can type signals where the pinpointing shows a large target. Should be real easy to find.
 
Any other type of metal in the box, like for reinforcement? What's the box setting on when testing? Maybe concrete with rebar? HH jim tn
 
We tried everything from sitting the "full box, never opened" on a tree stump that was scanned before hand to see if there was any metal in it to scanning a clean patch on the grass and then checking the box. By the way, each box is worth approx. $10,000. (check it out on the internet)(pic on internet shows no metal inside the box)
She buried the box in her plantings that line the outside of her backyard and those planting areas are approx. 15 feet wide and are on each side of the backyard and on the backside of the yard. Also she used a lot of canvas/plastic tarps to cover the ground for weed control and everyone of them has eyelets which ring out clear as a bell.
Now, we get a 35-40 reading when the coil is sitting on top of the box, imagine what that reading will be when it is buried one to two feet deep.

I have three big questions:
How can you bury a box that big and have no idea of where you buried it?
She never opened the boxes, is there really silver in them or did she get taken to the cleaners?
If the box is full of silver coins, how do we get a low reading on the metal detectors?

Our next step is to try some other metal detectors and play around with the sensitivity to see if we can get a better reading on the full box. If that doesn't work, we are then going to use metal probes. Also contacted Garrett to see if there is any reason why we get a low reading on a big box of silver-no answer yet.
 
I would open the box you have and see what is actually in it.
Looking up the web site listed on the banding - seems to be legit.
http://www.mint.ca/store/template/home.jsp
 
The box is a very large target, the eyelets from the traps may be annoying but they will be spaced at regular intervals and like pinpointing a ring they are there and gone, so after you find a few you can call them and move on. The box of coins won't pinpoint the same as small objects as it is the size of the coil even at 12"-24" it is a big object and won't be missed! As for forgetting where she placed the box? Age, failing memory, changes to the garden? Did she have any help burying the box of silver coins? Any neighbors have line of sight to the area where the box is? Did the lady mention to anyone that she had a box of silver coins buried in her back yard? Have any contractors worked in the yard since the coins were buried, plumbers checking drains perhaps? If the answer is yes to any of those questions, then there is a good chance that someone has already retrieved it......

Best of luck, keep us informed about your hunt.
 
Could be that the various denominations of coins contained in an erractic pattern is causing erractic readings.
 
My understanding of the target ID numbers is that they are generally calibrated for an object the size of a single coin (which is why a silver dollar IDs differently than a dime) an entire monster box of silver is like 35 lbs, way bigger than one silver coin
 
We have been back a number of times, probing for the boxes, metal detecting for them and no luck. We have now contacted a ground penetrating radar company and a guy is coming to see what he can find. Will keep you posted.
 
Well, the ground penetrating radar guy came and had NO luck. We buried the remaining box for him and he still could not detect it. Disturbing the soil around the target makes it also harder to detect with his machine.
Up in the air now and need suggestions. Call in the backhoe may be the next option.
This was interesting, I put the small coil on the At Pro and got a much stronger signal off of the remaining box of coins that she has. It rang up as a 90 on the screen. Went over the entire area with the small coil also and no luck.
 
Not sure what's up with your pro, I haven't used mine enough to understand whats going on. But I can assure you that my ATX would be blowing my eardrums out with a box of silver that big. Maybe give one a try, especially with a deep seeker coil if it is buried deep.
 
How long ago did she bury the box? How old is the lady? Seems to me a good metal probe should locate it if it's actually there. Might take some time but the probe would find it. Doesn't sound like the area is all that big. The whole story seems strange to me but good luck trying.
 
Buried for about 3 yrs. Appears she is of sound mind and body, about 65 yrs. old, divorced and lives in the house by herself. She is adamant that nobody knew about the coins and her back yard is fenced in and no neighbors can see into her yard. Very strange that she cannot remember where she buried them.
The real mystery is why I get the reading of 35-40 on the coin box with the standard coil and then I get the reading of 90 with the 5 x 8 coil. I can understand the 90 reading but not the 35-40 number. I have contacted Garrett and asked them if there is a technical reason for these readings. Ground balance was set the same for both tests and the test site was clear of all trash. Also, the reading of 90 is only good for about 6 to 8 inches from the box and with the boxes buried 2 ft deep there is no chance of detecting them. The CZ-21 sounds off on the box for a distance of about 1 ft to 1 1/2ft but still cannot detect it when it is buried.
 
I agree, garret ATX PI machine would be my next. Completely different than all the VLF machines you already posted using. The story does seem odd though..
 
I went to the source of good information today and this is what the man of experience had to say:

This is why your metal detectors are doing weird things on this big box of silver coins.
The manufactures do several things to make the newer target ID machines "acceptable" to the consumers. The fierce competition really makes them scrambling to make things work. The demand for fast recovery after the phase delay (motion discrimination), and to create a smooth running detector without a great deal of nasty crackle sounds over rusty iron, they do what I call a phase shift which erases a segment of the lower and upper quadrant. This is done to remove some of the iron response. This is nothing new, when I was selling machines like the Teknetics Mark I back in the early 80s they had to do this to make the best machine of the day work smooth without driving people nuts! The Mark I would detect a silver quarter at nearly 10 inches but they wouldn't pick up a roll of quarters at 2 inches if that. The need for this is made even greater when the public demands the DD coils. I can better explain this in person. You don't need a PI detector, any older machine with a good true non-motion all metal mode would work. Even an old Garrett BFO will work.
What you really need is a two box metal detector.
Does anybody in Michigan own a 2 box metal detector, if so, please PM me.
 
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