Silversaddle,
One more thing perhaps worth your reading, if you've not already, is https://en.wikipedia.org/wiki/Trim_(computing).
Disclaimer: I am not in the data shredding service, though I know someone who is. He has a van and he picks up locked bins of paper. (Actually he's an old data recovery customer which is slightly relevant here. His primary HDD failed and I managed to reclaim his most important docs by using another drive of the same common SG model of which I happened to have another on hand.)
Now, I consider that the term "shredding" is actually open to a little interpretation. It's generally considered synonymous with data destruction, only... it just isn't. For example if one were shredding printed documents, the information is not erased from the paper, but at the very least they are cut into thin strips. We all know this is merely a time consuming jigsaw puzzle (as exemplified in "Better Call Saul"). The later cross cutting technique multiplies the difficulty by the inverse of the strip width. Difficult. But the information is still printed for all to see. Even a certified shredding does not destroy the data. It merely obfuscates and jumbles it beyond reasonable recovery efforts.
Yes? With me? It's not impossible. It's just very, very improbable. Now, let's translate that to SSDs.
If you simply file-erased an SSD and called it done, you should be slapped. Twice. From each side. But if you also have TRIMed it (see above), there's only a very small but hypothetical chance of recovering a few blocks of data that had been reallocated, as per previous thread. Now, I have performed successful data recovery on broken and/or formatted HDDs for years but I've still no idea how I'd get any real world data off a TRIMed SSD. Maybe there are people who can. Good luck, but I am actually able to talk to girls.
So, if one had stripped the chips off multiple boards that had been erased, one would have created quite a puzzle. Because to recover anything, each stripped chip must be resoldered into its original and right location. A difficult but very achievable task for a single chip stripped by a chisel. But more than one and it becomes "Mastermind" to the power of the number of chips involved. And a single wrong guess may (or may not) be the end of it on powerup. Throw it into a two thousand pound "bucket o' chip" and that's a jigsaw of unimaginably monumental proportions. A crack with a hammer would make recovery even more unlikely - if such a thing were possible.
Now, if you knock the chips off and pyrolyse them, I think I could safely consider that you not only have bundles of 9's in your guarantee, but a pretty decent precious metals recovery source to boot.
But that's just one man's opinion, so take it accordingly. Sorry to ramble, I just find this all fascinating.
