From an article published on the BBC News web site on 21st May 2005:
Mining for copper and zinc could return to Anglesey’s Parys Mountain mine after an absence of almost 100 years.
As a result of recent increases in world metal prices, owners Anglesey Mining plc are starting exploratory drilling work.Finance director Ian Cuthbertson said they were confident of “significant reserves” at the site, which has been mined since the Bronze Age.