axil: So you shouldn't object the comment, which is dealing explicitly with graphite only.
Anyway, Mr. Egely is a kind humble guy, who I know in person from his Prague lecture - but he's non-reliable in every quantitative research due to his rather naive, esoteric nature (Wyttenbach's - like).
In particular, the transmutation of the red sludge into copper inside the RF plasma with copper electrodes (which would be subject of sputtering) is a priori doubtful.