'Robust' PEA for Restart of Idaho Mine News Update This report for Bunker Hill Mining's namesake mine outlines a low cost operation. "Our PEA confirms that by maximizing the use of existing resources, partnerships and infrastructure, the Bunker Hill mine has the potential to be restarted rapidly as a low cost, long life, sustainable operation," CEO Sam Ash said in the release. The report outlined an operation that will produce 550 million pounds (550 Mlb) of zinc, 290 Mlb of lead and 7 million ounces of silver over 10 years of mine life. In other words, it will produce 912 Mlb of zin...