COEUR D'ALENE, Idaho--(BUSINESS WIRE)--Hecla Mining Company (NYSE:HL) ("Hecla", or the "Company") announced today that it has agreed to sell its subsidiary that owns the Casa Berardi operation in Quebec, Canada to Orezone Gold Corporation ("Orezone") for up to $593 million in total consideration. The transaction advances Hecla's strategic transformation to focus on its premier silver assets and is expected to strengthen the Company's financial position. The transaction is expected to close in t. ...