Harmony Gold
Harmony is the fifth largest gold producer in the world, with operations and projects in south africa, australasia and papua new guinea (png).
http://www.harmony.co.za/
Silberbergwerk Ramingstein
Silberbergwerk Ramingstein
http://members.aon.at/silberbergwerk/
Silbergruben Oberzeiring
Silbergruben Oberzeiring
http://www.silbergruben.at/