波列斯瓦夫一世
The first two mineshafts (called "Michał" and "Barbara", – named after the first director of the mine and Saint Barbara), were built from 1950 to 1954. The salt has been drilled since 1956. Until 1966 horses were the main way to drill the salt, in this year the electronic traction drive was built. The third mineshaft, located about 4 kilometres from Michał and Barbara, is named "Chrobry" (after first Polish king, Bolesław I Chrobry).