The challenge here is that the ground is full of things that Ground Penetrating Radar will detect. Dense rocks, random scrap metal, pipes, electric wires, whatever.
Byron Preiss got clever with the specification of what he was burying, trying to defeat metal detectors. The set of things buried in each location is a ceramic key, inside a fairly small ceramic casque (mostly unpainted, apparently only the master casque that appears in the photos in the book was fully painted), inside a “protective” (not really, for time measured in years) lucite box.
The only metal that seems to have been used is a short length of coat hangar for the shaft of the ceramic keys. The casques are ceramic, and going by the photo of the Chicago casque, smaller than about 6″ on a side, or about the size of an unremarkable rock. The lucite outer cases aren’t much larger, and the one found in Cleveland was in bad shape (and sadly, after 35-plus years, water penetration, ground shifting and pressure, etc, aren’t going to be kind to the lucite outer boxes or the contents).
If you wanted to practice with a tool like Ground Penetrating Radar, then a good way to see if the tool is useful is to make a mockup of a casque, bury it in similar places as the ones we know (in a park lawn or an overgrown shrubbery planter), and see what you can detect.
In archaology, there’s a reason why so many dug up artifacts come from graves, battlefields, temples, palaces and caves. These locations are easier to find. So far we have the back corner of a park lawn, and a large planter in another park.

Any thoughts on trying one of these?
https://www.engineersupply.com/Schonste … cator.aspx

I use a bully probe.
https://www.amazon.com/gp/product/B00KOMTHYE/

Hi Everyone,
I’m interested (I am sure so are you) to see what kind of tool or equipment one would use to find a porcelain box, 3-4 feet deep. There is a metal key, apparently, in there.
Don’t forget that after 30y+ there will be roots and soil movement increase/changes.
So we’re looking for:
– tool/equipment
– that can scan
– 3-4 feet deep
– Metal
– or Porcelain
Any ideas (and URLs) on specific material ?
Thanks & regards,
CBY

shovel, hands, eyes.

Glossiphoniidae

shovel, hands, eyes.

Trasher,
Not a valid answer and not my question.
What if you DON’T have PERMISSION to DIG ? Then you need proof that there is something. Sites and regulations change in time…
CBY

CBY

Trasher,
Not a valid answer and not my question.
What if you DON’T have PERMISSION to DIG ? Then you need proof that there is something. Sites and regulations change in time…
CBY

That was your question, and that is the most valid answer. I’ve worked with many tools, and the God-given are the most useful. Dig a dozen holes using whatever you want and tell me otherwise.

Trasher, sorry but you just can’t read properly and I guess that’s why you will never find anything.

Ground penetrating radar. You can rent them for a few hundred dollars.

Unknown

Unknown:
Trasher, sorry but you just can’t read properly and I guess that’s why you will never find anything.

I have no trouble with reading comprehension, and from where I sit, the problem is that your question is flawed. You are making an assumption that there are ways to determine the location of the casque without digging. I’ll assume that you are talking about GPR, metal-detectors, and probes of various kinds. You aren’t the first, and you won’t be the last. But to date, there is no evidence that any of these tools work. At the risk of putting words into his mouth, I think that is what 421 is trying to tell you. You want to be sure, you have to dig. The rest is theory.

CBY

Trasher, sorry but you just can’t read properly and I guess that’s why you will never find anything.

Unknown

Unknown:
I’m interested (I am sure so are you) to see what kind of tool or equipment one would use to find a porcelain box, 3-4 feet deep… Any ideas?

What am I missing here? You are asking for tools, and I gave you a list of the most useful.

CBY

Hi Everyone,
I’m interested (I am sure so are you) to see what kind of tool or equipment one would use to find a porcelain box, 3-4 feet deep. There is a metal key, apparently, in there.
Don’t forget that after 30y+ there will be roots and soil movement increase/changes.
So we’re looking for:
– tool/equipment
– that can scan
– 3-4 feet deep
– Metal
– or Porcelain
Any ideas (and URLs) on specific material ?
Thanks & regards,
CBY

Seriously Guys
?
I don’t want to start a flaming war here but…
1)
My subject is quite precise
: TOOL & EQUIPMENT
2) And I do end
with
: “Any ideas (and URLs) on
specific material
?” Any hand urls for sale ?
I know, and you do too, the difference between hands, sweat and physical man-made tool & equipment. If people don’t want to help, change channel.
CBY

Egbert

Ground penetrating radar. You can rent them for a few hundred dollars.

Thanks Egbert !