Coins Dug Below Iron Thread :ninja:

[earthmansurfer]

Generally thought to be a technical impossibility I keep seeing reports here and there of coins dug below iron, I think I've found 4 decent possibilities, 2 of them here on finds and listed below. Not exactly scientific but I'll work with what I have. I don't think these types of finds will necessarily be a regular thing but even if it is partially or in certain instances true, it could be something special. If you find a coin below iron (not touching), it would be appreciated if you could post the details here, whatever you may have. A little is better than nothing. Just bookmark this thread and add to it when you find a candidate. Precise measurements aren't possible but it would be nice to know approximations and anything about your find. No iron next to or below coins, just coins below iron please. Some information that would help this "study":

Depth and size of iron
Depth and type of coin, VID number
Spatial locations relative to one another (e.g. - I found a coin at 9" deep with iron 3" above it. The iron was about 2" off center.)
Conditions - dry soil, wet soil, mineralized soil, time of day, etc.
Target trace - did it show both targets? How did it appear? etc.
Did you get audio on the coin?
Settings, pattern, etc. (e.g. - Were you running ferrous coin?)
Whatever else you would like to add.

I know the above might seem like a bit too much, but understand, it should be a technical impossibility to find coins under iron. So, that is the reason for me starting this thread in a sense. The more information we have, the easier we can see patterns, the easier we can possibly reproduce the results, etc.

Thanks,
Albert

ps - Here are some threads here on Finds mentioning the coin below iron possibility:

Pennies under hunk of iron
coin below nail and iron scraps

 

[Beyonder]

First!

j/k


Depth and size of iron-1" rusty bolt with a think nut on it

Depth and type of coin, VID number-wheat penny 9" 12-32/12-36

Spatial locations relative to one another-I found a wheat penny at 9". The 1" iron bolt was 2"s directly above it

Conditions - dry soil, wet soil, mineralized soil, time of day, etc.-wet soil, low mineralization 3pm est

Target trace - did it show both targets? How did it appear? etc.-Yes. It showed a small light orange line in the area of 12-32/12-36 and it showed a darkish blue in the 35-44 area

Did you get audio on the coin?-yes, It gave an indian penny sound

Settings, pattern, etc.-ferrous coin, sensitivity at 27, volume gain 25, pattern was a modified Bill S.

I dug it because I thought it was an indian head penny.

Bey

 

[sube]

Depth and size of iron 7 inches 2 inch nail big head on nail
Depth and type of coin, VID number 8 inches indian 12.35 to 12.37
Spatial locations relative to one another (e.g. - I found a coin at 9" deep with iron 3" above it. The iron was about 2" off center.) off center 2 to 3 inches
Conditions - dry soil, wet soil, mineralized soil, time of day, etc . bone dry mineralized
Target trace - did it show both targets? How did it appear? etc. yes cursor had colour bottom right had blue
Did you get audio on the coin? yes one way
Settings, pattern, etc. (e.g. - Were you running ferrous coin?) yes open screen
Whatever else you would like to add # were jumpy the other way

 

[sube]

Depth and size of iron 2 inch nail big head
Depth and type of coin, VID number 9 to 10 inches 12.40 solid signal wheat penny
Spatial locations relative to one another (e.g. - I found a coin at 9" deep with iron 3" above it. The iron was about 2" off center.) 6 inches nail coin 9 to 10 inches don't know if nail was off center or not
Conditions - dry soil, wet soil, mineralized soil, time of day, etc. bone dry mineralized
Target trace - did it show both targets? How did it appear? etc. yes lots off colour in cursor blue in lower right cursor
Did you get audio on the coin? yes solid signal
Settings, pattern, etc. (e.g. - Were you running ferrous coin?) yes open screen
Whatever else you would like to add. It amaze me

 

[earthmansurfer]

See video below text.

Depth and size of iron - 3" - 4" deep, a rusty iron coin (between nickel and dimes sized)
Depth and type of coin, VID number - 7" deep - aluminum disc (half dollar sized), VID 12 44
Spatial locations relative to one another - directly on top of one another, around 3" between
Conditions - dry soil, wet soil, mineralized soil, time of day, etc. - regular ground, not wet, not dry. somewhat iron mineralized, noon
Target trace - did it show both targets? How did it appear? See video
Did you get audio on the coin? yes, clean.
Settings, pattern, etc. (e.g. - Were you running ferrous coin?) minimal disc pattern, recovery deep and fast off, ground - ferrous coin, manual sens 30


[video]http://www.youtube.com/watch?v=owySC-XYlUs[/video]

 

[earthmansurfer]

A very notable find by Larry of a coin below iron: Larry's coin below iron

So yes, here is a thread of a database for coins dug below iron with the CTX.

Add your reports here.

Albert

 

[MAcle1997]

Two years ago I dug a nice half dollar under a nut/bolt combination in a backyard using my Explorer II.

- The iron bolt was brown but not severely rusted, carriage bolt size, a little smaller than a dime in diameter and about two inches deep.
- The coin was a 1942 Walking Liberty half dollar laying flat at 4.5 inches deep in damp soil. Solid 00-21 on the Explorer II.
- The coin was directly under the bolt with the bolt laying horizontally.
- Mid afternoon - 3:00-5:00PM, damp but not wet, low mineralization, clay-based soil.
- 00-21 with audio from two directions, can't remember what the signal was from the other two directions.
- Was using the stock coin discrimination pattern on the Explorer II. Conductive tones.
- Once I removed the bolt and rescanned the hole I got a 00-26.

Mark
Fredonia, NY

 

[Chris(SoCenWI)]

Albert,

You can try this for yourself. Place a coin under a nail. If you sweep the two with the center web of the coil pointing in the exact same direction as the nail you can get a decent signal. Then circle around the target while swinging. Once you get a little ways from having the coil web and nail parallel you will get a null. This is because of the shape of the field produced by a DD coil as opposed to a concentric coil. I strongly feel this is why the explorer series were so successful in finding coins in "Worked out" areas; they were the among the first machines that came with DD coils.

I'm curious to see what the CTX does when you run it over this target combination. Can it still see two targets when you swing the coil with the nail perpendicular to the nail?

Chris

 

[sube]

Chris Yes it well see both targets but no audio only in target trace. The signal well appear as a cursor filled in the 12.33 range and the iron cursor on the bottom.The signal well be drawn down because of the nail still shows on target trace but only grunts on audio.So no high tone 12.44 #s well read 12.33 but well grunt as iron.I don't know if i explained it right but it well show 12.33 and the cursor well be filled an the iron cursor well be filled on target trace only audio well grunt. 90 degrees to that hit 12.44 solid all day long and iron cursor filled with great audio. The 12.33 is a automatic dig in my book also.

 

[TheGeorgiaCanuck]

Ok dunno if this counts but I got it on film. Silver dime 2" away from two rusty iron nails. They weren't on top or below the target but they sure messed with the signal. I dug it because I'm used to digging iffy signals with the AT-Pro when running zero discrim and iron audio.

Depth and size of iron - 3" deep, two rusty iron nails spaced 1" apart.
Depth and type of coin, VID number - 3" deep, a 1959 Canadian silver dime.
Spatial locations relative to one another - Silver dime was 2" behind the nails at same depth.
Conditions - dry soil, wet soil, mineralized soil, time of day, etc. - dry ground, medium high mineralized, afternoon around 6pm PST.
Target trace - did it show both targets? How did it appear? Broken 12-41 to 12-43 signal with iron showing in ferrous-coin.
Did you get audio on the coin? yes, iffy and broken.
Settings, pattern, etc. (e.g. - Were you running ferrous coin?) ferrous-coin/combine, deep on, fast on, open screen. pinpoint: sizing, auto sensitivity.

Enjoy.

[video]http://s227.photobucket.com/albums/dd202/Lar_Gand/?action=view&current=silvermasking.mp4[/video]

 

[martygene]

Albert et al, i have really started to work on trying to find good targets under iron and am having some success with it, Sometimes i see the iron and the good target on the screen and can hear the good target audio reasonably well and sometimes the audio is scratchy at best. sometimes i dont even hear the good TID audio but see it on the screen. I am hitting about 50/50 where i do find a good target and sometimes i get fooled and only find the iron target. i am using open screen, combined audio, target trace, fast on, deep on, auto +2 and and volume gain all the way to 30.
i will keep working on this and keep you informed of my progress.

 

[earthmansurfer]

That is great news martygene and I look forward to your results. Sounds like you are using ferrous coin as it can give the visual but no audio - as the manual says. I just see too many false positives on the screen to dig many of them BUT I was using 50CO and not combine, perhaps that is it. Outside of that, I'd really like to know what you are doing to get to a 50/50 success rate? That is great! Also, what is your ground mineralization like? Mine is somewhat iron mineralized - non silver coins seem to top out at 9" or so of depth.

Thanks,
Albert

 

[TheGeorgiaCanuck]

Iron nail 2" UNDER 1921S Wheat Cent.

http://s227.photobucket.com/albums/dd202/Lar_Gand/?action=view&current=M4V02045.mp4

 

[NealNoIN]

n/t

 

[rjfjedi]

1.5" nail above 1946 Rosie. The nail was about 1" above the dime. Was getting a 12-43 signal strong, with iron showing on screen as well. Using gonehuntings open combined mode. Works like a charm!!!! Oh and the dime was down about 5".

HH
Rocco