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Tragic Titan submersible’s $62 SanDisk memory card found undamaged at wreckage site
(www.tomshardware.com)
This is a most excellent place for technology news and articles.
There's probably an expensive helium mechanical drive somewhere down there that suddenly found itself to be considerably smaller than it started out.
They used 3 mini PCs with SSDs, which all of them were completely smashed and unrecoverable. the flash chips were all cracked or missing.