Barbara-Chorzów Coal Mine
It was established in 1970 after the merger of the Barbara-Wyzwolenie Coal Mine and Chorzów Coal Mine. The first was infamous because of an underground fire in 1954. The number of victims is still unknown (80–120 people). The communist authorities whitewashed the size of the accident. The rescue operation lasted 50 days. The mine stopped operating on October 31, 1993.