Polkowice-Sieroszowice Mine, located in the Glogow copper belt of Poland, is an underground mine owned by the giant KGHM Polska Miedź. Polkowice uses the blasting method to extract the silver core. Its silver reserves are estimated to be around 775 million ounces (Moz.).
In 2020, 39.2 Moz of silver was mined from this Polish mine, making it the world’s biggest silver mine. With the available reserves, KGHM’s mine can continue silver-producing operations till 2057. In addition to silver, the mine also extracts copper and gold cores, making it an important part of the silver mining industry.