You think mass quantities of silver not reacting correctly, try this

[vlad]

I was balancing a loop on a 2-B, and to check the depth I grabbed a 3" finishing nail-detector would not pick it up.
I figured the unit was broken so I tried some others-same result.
Where it was possible I had the ground set mid-point; others were at the point set where I had been hunting [and my ground balances at 5.5 on a CZ.]
Then I tried the pinpoint mode-Zap! F-75, CZ & C$ wacked it hard out to 5"; but units like the 2-B, 'Baron [F-75] would only get the barest whisper in
non-motion [stat mode] at around 1". I would have bet there would not have been any difference in p.p & stat, but....
I asked Eric Foster about it and he said it was a change in the metallurgy caused by the zinc/heat treatment that caused this effect. You may think this is good-not seeing nails,
but this is in the air; once in the ground when it rusts-its the normal reaction we face with iron.
If that's not enough to confuse things, George Paine said in a lab situation he had experienced [rusty] iron nails increasing the detector field to the point
that it allowed the detector to hit [a good conductive] target deeper.
I've always though there was more to see-through with very deep coins in iron than some of the explanations we see.

 

[amberjack]

so you are saying the rusty nail sling shots the detection field deeper than it would without the nail?

AJ

 

[vlad]

I have dug some coins at ridiculous depths with iron nearby-but I have no way of knowing if that phenomena was occurring.
If you know the depth at which newly buried coins cannot be detected in a coin garden, does it seem reasonable that adding nails would be valid to see if you can
hit the target after? But how much iron, how close? (I would think 0-disc is a must)
Interesting idea though.

 

[amberjack]

I know its pretty hard to prove if at all, but they did use the moon to sling shot themselves think its iron so who knows but detectors seem to come to life around it.

AJ

 

[Dave J.]

Nearby iron can boost the detectability of nonferrous metal, depending on their relative sizes and the distance between them. It's not just your imagination.

 

[amberjack]

Thanks Dave, good to know there is some science behind it I will keep working those iron patches..

AJ

 

[Jackpine Savage]

Sometimes science seems more like black art and vice versa. Getting those "whoa" moments and just about any ole detector can do it for ya makes my day.

Tom

 

[Cal_Cobra]

Vlad good to see you posting, where ya been buddy?

HH,
Cal