Industries as diverse as the medical, pharmaceutical, aerospace, circuit board and optics industries generate sufficient waste containing these metals that recovery is a viable and necessary option.
Because the amounts of precious metals present may not be large enough to be economically expedient for individuals, request an estimate first from the firms that specialize in the metals you wish to recycle. They can pick up the materials, clean them, as well as extract, weigh and assay any recovered metals for you.