Metal Refining & Recovery, Episode 25: Gold Playing Cards?
30:24
Getting Gold from the American River (filmed mostly in 2018)
17:02
Precious Metal Refining & Recovery, Episode 3: Karat Gold
31:09
Refining GOLD For Fun And PROFIT Pt1
24:38
Refining Gold Scrap 14K Jewelry To .999 Fines Bar
11:20
Precious Metal Refining & Recovery, Episode 13: Platinum From Spark Plugs
14:23
Récupération d'or à partir de processeurs de 14 kg
26:34
Coulée de lingots d'or
35:01