Very informative, tho as you point out not so practical for most. Far safer to let others do the reclamation.
If you are inclined to do your own electronics salvage for the gold content, I hear Pentium Pro CPUs yield a high percentage of gold compared with other sources.
Those are monstrously large chips. The PPro was one of the first ultra high perf. systems I build back in the day. Hard to believe (in some ways) that was almost 20 years ago!