COEUR D'ALENE, Idaho--(BUSINESS WIRE)--Hecla Mining Company (NYSE:HL) today announced that the U.S. Forest Service has issued the final decision notice and finding of no significant impact for the Company's 100% owned copper-silver Libby Exploration Project (Libby Project) in Lincoln County, Montana. This significant milestone advances the exploration phase of a world-class copper and silver deposit located southwest of Libby, Montana. The Libby Project represents an important step in unlocking. ...