Glad you asked. The metallurgy is very simple. Silver is present but in very small amounts. The silver will be recovered as a by product. It doesn't impact the processing of the ore and has very little economic impact but every penny helps. Depending on the refining contract they may or may not get by product credits when the gold dor bars processed at the mine are refined to 9999 gold. As to other impurities there will be minor and trace amounts of a number of elements but these are found to some extent in all Archean gold deposits. NOTHING I have seen or read indicates there will be any complication or recovery issues. ... Been There