Dressing the Ore . Cornish Mining World Heritage Site
During the 18th century, most of the ore dressing (or processing) was done by hand. . It was hard, physical work which soon took a toll on their health and appearance. . Copper ore was dressed somewhat differently than tin and was usually.
Gold extraction refers to the processes required to extract gold from its ores. This may require a combination of comminution, mineral processing, . Hard rock ores have formed the basis of the majority of commercial gold recovery .. as a minor constituent in a base metal (e.g. copper) concentrate, and is recovered as a.