Exhibit 99.1 NEWS RELEASE HECLA ANNOUNCES SECOND QUARTER PRODUCTION 10% increase in silver production over year-to-date 2023 FOR IMMEDIATE RELEASE July 10, 2024 COEUR D'ALENE, IDAHO -- Hecla Mining Company (NYSE:HL) today announced its preliminary production results for the second quarter of 2024. HIGHLIGHTS Year to Date ("YTD") 2024 compared to YTD 2023 ● 10% increase in silver production ● Keno Hill produced 1.5 million ounces of silver, with milled throughput of 341 tons per day ("tpd") YTD and 406 tpd i ...