Videos
https://www.youtube.com/watch?v=ASQCa7mfjVo. part 1
https://www.youtube.com/watch?v=gt-OOWxr7_s. part 2
https://www.youtube.com/watch?v=5TNy93baIGM
https://www.youtube.com/watch?v=pyvpaPr-J6I
https://www.youtube.com/watch?v=P6JwaAc8B5Y. 7 months
https://www.youtube.com/watch?v=LL1H_XY4zM8. 1 year hydrogen peroxide
https://www.youtube.com/watch?v=mvAtXNc06Jo. 1 year vinagar
https://www.youtube.com/watch?v=O0Q_qkzIxio. not show the melting process
https://www.youtube.com/watch?v=0cjDwglpnvg. burn and chemical
https://www.youtube.com/watch?v=vw9Zf6UnDIE. practical cut
https://www.youtube.com/@ScrappingIrish. scrapping Irish channel , he uses nitric acid.
https://www.youtube.com/watch?v=BIqDK23_Rs4 DIP IC gold and silver
https://www.youtube.com/watch?v=ada0vwSkyK8. use caustic soda to unveil the pcb to see gold
https://www.youtube.com/watch?v=8Jk8SyC8fco
https://www.youtube.com/watch?v=-yM3Zdx-DYw no acid smelting , not full extraction.
https://www.youtube.com/watch?v=tQ2dKTQrNCA. how to chip off components on boards
https://www.youtube.com/watch?v=hDuFNmSQAUc. no nitric acid. 11.58g gold
https://www.youtube.com/watch?v=UoPx1Drfq3U. gold from connectors
chemical making stanneous chloride
https://www.youtube.com/watch?v=jY7YlLQsryI
https://www.youtube.com/watch?v=iyHtcoFR0Ig. plumber no lead solder containing 90% tin
low grade pins gold extraction
https://www.youtube.com/watch?v=vUhnttmwvrA
https://www.youtube.com/watch?v=RbGU-G6n0SE. practical one
https://www.youtube.com/watch?v=sbpRKSh5g6c. welding machine using laptop power supply
https://www.youtube.com/watch?v=L91CIorE3xs. i like practical one rather than just talking
https://www.youtube.com/watch?v=pQoSVHFJqAs. sorting components and id gold
https://www.youtube.com/watch?v=ievbxE9y5vo muratic acid to dissolve solders pcb
https://www.youtube.com/watch?v=NTVfTXw0i8Q. find gold Indian traditional methods
https://www.youtube.com/watch?v=R5A5TgqbPFg. indian guy second video mercury
https://www.youtube.com/watch?v=ObddNx47Mmo. indian guy 2 kinds of powders?
https://www.youtube.com/watch?v=nlRSs2RPoTQ. white guys, not sure what method? not efficient
https://www.youtube.com/watch?v=IjDbyugJcmM. extract gold in 5 hrs.
https://www.youtube.com/watch?v=RPeFWcuuD58. palladium and platinum from ceramic capacitors
Articles
https://lets-rebuild.com/getting-gold-out-of-microchips.html#google_vignette