Gold Rush

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.