Aluminum was never “made”, it has always been refined from Bauxite ore and that is now “cheaply” done. In electric furnaces. Gold has been “made” (assembled on the atomic level) in nuclear reactors, but the energy cost far exceeds the value of the amounts that can be “made”. A true alchemical nightmare, so to speak It “works”, but is too expensive to show a profit, by several orders of magnitude!
Google is pioneering this asteroid mining venture, I heard of that about a year ago.
They “think” that asteroids may contain high concentrations of PMs, but I have not seen compelling data.
I suppose the meteorites that have been analyzed can help, but what I’ve seen, they say is “mostly rock”
which is likely what is mined and refined in these earthbound mines…
"ROGUE ELECTRICIAN" Hoping to be around to re-energize the New World.....
Cogito, ergo armatus sum