Friedrich-Mine
Tarnowskie Góry, Poland
The Royal Friedrich Mine (Königliche Friedrichsgrube) near Tarnowskie Góry (then Tarnowitz) was a lead and silver mine from the 18th century. It was one of the oldest and most important mines in Upper Silesia. Parts of the former Friedrich Mine have been converted into a visitor attraction under the name Silver Mine in Tarnowskie Góry. To drain the Friedrich Mine, the Deep Friedrich Adit (Tiefer Friedrichstollen) was constructed between 1821 and 1834. The lead ores extracted from the mine were smelted at the Friedrich smelter. The mine and drainage system are an industrial-heritage landmark showing 300 years of hydraulic engineering.
Mine data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).