Mining Wikipedia However it was the Romans who developed large scale mining methods The methods had been developed by the Romans in Spain in 25 AD to exploit large alluvial gold deposits the largest site being at Las Medulas where seven long aqueducts tapped local rivers and sluiced the deposits Spain was one of the most important mining regions but …
Get Pricelarge scale alluvial gold jig Gold mining WikipediaGold mining is the resource extraction of gold by mining As of the world s largest gold producer was China Placer mining is frequently used for Alluvial or eluvial deposits The author was a Procurator in the region and so probably witnessed large scale hydraulic alluvial gold mining technology Appropriate Process Technologies Mining
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