Gravimeter capabilities, treasure cache?

[Gunslinger44]

Ok, thank you, I appreciate your thoughts. I have emailed the company developing the "Wee G" about such an application (relatively small precious metal cache located 3-5 feet down) with no reply yet, I may just contact a geological surveyor and ask them what they think.

This story is very interesting for sure, especially in that Enviroscan confirmed a large mass below, and how the F Bee I made the treasure hunters wait in the car away from the dig site, even though they'd been promised they could watch the dig, then they brought them over to the empty hole after some trucks leave and try to make them look stupid "tell me what you see" Finders Keepers said "They were the ones who told US that something was definitely down there before they started the dig". The whole thing smells of Victorio Peak.

Sorry i was not intended to be cynical about anything on this topic. It's just interesting story that reminds me on similar one that happened here in late '90s.

And i see certain misunderstandings here too, please understand that:

1) "...large mass of high density metal.."
2) "...on target caches..."
3) "...literal tons of metal down here..."
4) "...a cache of silver or gold about 3-5 feet..."

ARE NOT THE SAME THING, not the same target.
So... i was referring my observations rather on something which i imagined as quite large and consistent target.
Not precisely a "...small box of modern coins, buried there few years ago..." as it is the case at "cache test" from the other topic.
It is quite misunderstanding referring the actual target; won't you agree?
My advice would be; you first to decide what exact target you are interested in.
Than you can expect more concrete suggestions from other fellow members here.
No hard feelings upon this.
Unlike Mr. DJ; i really enjoyed reading this story from posted links!
Fun!

[ivconic]

There are two things in that story which i would like to elaborate in details, not related to each other at all though.
Both interesting enough to me.
First one; let's assume that there was indeed real fortune there. So they came, dug it and took it away.
So what? What is all the big fuzz about it? Yes there it was, yes the state came and took it away. So?
It supposed to be state property anyway... according to law.
Hopefully (or in our case unfortunately) such laws are more less the same worldwide.
I am not saying i agree with that, nor am happy with such laws, yet fact is it is the law.
Why people fuzzing so much about that? Somebody stole something from them?
That is the part of the story which itches me and i don't understand it at all.
...
Second thing; "... Enviroscan confirmed a large mass below..."
Alright. Nothing dramatic about that. It is just a claim. General.
Do we know what exact kind of measurements they performed?
Could it be another magnetic anomaly? Natural phenomena that really exists.
I experienced one here in local, some 40km away from my home.
Whole ridge was "magnetized" 500% more than referent values are for this region.
I got lunatic readings on my magnetometer, some 200 000nT and referent values are 47 000nT.
So it looks like whole ridge was made of iron. Or sunk in iron. A "large mass below" too.
I later found out that it has long been known and tested anomaly, discovered, investigated and published by the state institute.
I felt stupid at the time. Must admit.
Could it be huge natural ore deposit?
Maybe an army leftovers from some previous facility, somewhere from the past which nobody remembers?
Maybe something dangerous for local folks, that's why FBI was there?
See where i am getting? Assuming. Wildly assuming.
And that's about all what we can do here.
Until we hear the details upon what kind of measurements Enviroscan exactly did.
Even than; we can have doubts in their honesty and readiness to disclose all the details.
Funny story. Itchy story. Very interesting story.

[Gunslinger44]

Well, the problem in that case would be that the F Bee I lied for one thing, lied about letting them see a historical dig, lied about finding it, uncovering probably the largest lost treasure in the United States, they at least deserved some kind of recognition for finding it. And as for it being Uncle Sam's money, well, thats a laugh, considering he robbed and burned the South, pillaged her of her wealth, also the fact that the Government prints "money" out of thin air, and gives illegal aliens and mass amounts of "refugees" huge amounts of money for nothing at all, while Americans have to work for our money, and hard. For instance, someone leaked that just a single Somali muslim immigrant woman in Minnesota is receiving $39,000 per year from the US government, for absolutely no reason at all. Times 10, $390,000, times 100 $3,900,000, times 1,000, $39 Million per annum. And there are hundreds of thousands of these people, not to mention Millions of Mexicans who are all receiving similar compensation from the government, in the form of welfare, food, housing aid, etc. All of this money is created out of nothing, backed by nothing, and given away. So you can see why I couldn't give a damn if Uncle Sam gets his hands on that gold or not, in fact I hope he didn't.

There are two things in that story which i would like to elaborate in details, not related to each other at all though.
Both interesting enough to me.
First one; let's assume that there was indeed real fortune there. So they came, dug it and took it away.
So what? What is all the big fuzz about it? Yes there it was, yes the state came and took it away. So?
It supposed to be state property anyway... according to law.

[Gunslinger44]

ivconic, as for Enviroscan, I am sure beyond a doubt that the Feds had them sign some sort of secrecy agreement concerning the dig, and articles I've read have said they refused to comment at all on that job. There are probably only a handful of people who are privy to what their instruments even indicated. I'd say Finders Keepers would do well to have another scan done of the location, to see if they get the same readings, or if it's minus whatever huge anomaly that was there in the initial reading.

[ivconic]

I guess will'll never know the real outcome. As usual.
...
Back to the topic; i think dbanner gave here most correct answer on the main question:
"...problem is gravitational waves gradients exist over a wide geographic area, making small anomalies in density undetectable..."

[ivconic]

Nevertheless!!!
Using skim Google search, (un)common (in)sense and my primary school general science and algebra; i stumbled upon this:

"...ARCHAEOLOGICAL STUDIES
An interesting example of the application of very precisely controlled and
corrected microgravimetric surveys to archaeological problems is to be
found in Lakshmanan 1987 and 1991. Very careful gravity measurements
were made in, on and around the pyramid of Cheops, in Egypt, in order to
locate possible secret chambers (voids)..."

And here is the article that may give all the needed answers:
https://scintrexltd.com/wp-content/u...er-Surveys.pdf

P.S.
There is an old saying: "wherever is the smoke - there is a fire too".
In case of a dead link; here is the article:

[ivconic]

And what about ERT/DCIP and TEM?
Looks promising too!

[Dave J.]

Dave J.

You could have saved us both a whole lot of trouble by not posting an ignorant reply to begin with. So you have NO experience or knowledge of gravimeters, and you decided to tell me its impossible anyway. Fascinating. Then you tell me to go research gravimeter specs online. Hell, why does this forum even exist? The whole forum should just be deleted and a big text that says "go do your own research, use basic kindergarten math, etc".

You don't read well. Or worse yet, do read well and pretend you don't.
The advice I gave you was very good advice -- if you actually have any interest in using gravimetry for locating a cache. Only if you have that particular interest.