Some slag dumps, such as
those generated by the nickel smelters and lead smelters, still contain
trace quantities of precious metals; these being gold, silver, platinum and
palladium. Whenever, it would pay to do so, AMRT’s melt reduction process,
as described for recovering the appropriate base metal above, can be, and
has been, adjusted slightly so as to amplify the recovery of any or all of
the said precious metals and divert them into an appropriate refinery route.