Lead and Zinc - Department of Energy- silver as a by product in mining ,essentially a co-product of zinc mining or a byproduct of copper and/or gold and silver mining. Complex ores are also the source of byproduct metals such as bismuth, antimony, silver…PROCESS OF EXTRACTING GOLD AND SILVER FROM ORES AND MINING ... · The invention relates to a process for the extraction of gold and silver from ores and mining by-products. The process according to invention consists in treating ores and mining …