The mines at Roşia Montană in Transylvania had been also quite big, and right until pretty lately,[when?] continue to mined by opencast strategies. They also exploited smaller deposits in Britain, for example placer and tricky-rock deposits at Dolaucothi. The assorted techniques they employed are well explained by Pliny the Elder https://zahngold10865.wikikarts.com/791809/details_fiction_and_kaufe