Once again this subject comes up from a PLP NEWS announcement - and for twice in a row( at least to me), the information seems to have popped up in The PMJ (The ICMJ Magazine).
The first article, where I initially saw something mentioned about this news, was in a column by the then owner Scott Harm called "PLP Update". (pages 39 - 42, Sep 2019). Some skimpy and sketchy information was revealed in the article and ANY further info seemed to only be available after you joined the PLP.
The story seemed unusual in how there had been some sort of accidental discovery of a strategy which almost every dredging miner in California could use - of course, every one of those miners had to join PLP to get any further "meat and potatoes" information.
I carefully read my monthly subscription to await any further revelations. After reading edition after edition and all the PLP Updates I stumbled upon something in the current article - Aug 2022, pages 45-46. It seemed to be a re-hash of the old information with a possibility for some sort of expansion of "the technique". (Oh yeah, the article also recommended that you be sure to join the PLP so that everything would be revealed - I think?)
Something to dwell on at least.
Joe