the zinc concentrate assayed 54.6% Zn with 82% recovery." "Precious metals recovered to the copper and lead concentrate (with additional recovered from solution) were 86% Au and 45% Ag".

The same process also allows for the selective recovery of other metals from the waste, such as palladium, silver, copper, iron, steel and aluminum. The Royal Mint initiative is important because ...

If the experimental production from residues is confirmed under industrial production conditions, the group plans to quickly scale up the method for large-scale implementation, aiming to utilize old ...