We get a sample from the side of the road and extract precious metal from it. Arthur's video: https://www.youtube.com/watch?v=DKGLXCXzDVU Neat little article on how to separate platinum and palladium: http://www.infomine.com/library/publications/docs/PlatinumPalladiumSeparationMethod.pdf Help me make videos by donating here: https://www.patreon.com/CodysLab