Shaft Complex 371 at Bad Schlema is one of the few uranium ore mining plants owned by SDAG Wismut that has largely been preserved. The surface installations constructed from 1956 onwards include the shaft building with a 50-metre-high steel head frame, the engine house with hauling engine, and a large function and administrative building. Mining in the world’s largest uranium vein reached a depth of more than 1,800 metres. The shaft complex, which employed up to 3,000 people, was therefore one of the deepest mines in Europe and provided more than 73,000 tonnes of uranium by 1990. The complex houses a remarkable geological collection of minerals.