美国银矿股盘前走低，赫克拉矿业下跌3.3%

Group 1 - U.S. silver mining stocks experienced a decline in pre-market trading on February 17 [1] - Hecla Mining saw a decrease of 3.3% in its stock price [1] - Coeur Mining's stock also fell by 3.3% [1] - Silvercorp Metals' stock price dropped by 3.1% [1] - Endeavour Silver experienced a decline of 3.8% in its stock price [1]