http://www.comune.casteltermini.ag.it/page/CozzoDisi.asp

Sulphur Mine Museum - Cozzo Disi -Pictures and Video (Sicily)

http://www.zeche-zollverein.de/Englische%20Version/index2.html

Museum Zollverein (click on the left hand side) (North-Rhein Westphalia)

http://www.bergbaumuseum.de/english/frame17.html

Mine Museum(North-Rhein Westphalia)

http://www.rutaminera.diba.es/activ0.htm

Mine Museum (Catalugna)

http://www.wwmm.org/musei/museo.asp?museo_id=32

Mine Museum (Catalugna)