Great visit to the #Bleiberg mine last week. The largest Pb-zn (Ge) mine in Austria, consistently worked for 700 years until the 1980s! Really impressed and excited by the sizes of the waste rock dumps, and their potential to be a modern source of Ge. Neat to see medieval workings and the way that they worked the ore seams back then. (# 1 waste rock pile, # 2 underground ore face from a moder working, # 3 mined out ore seam in a medieval adit).
#criticalmetals #minewastemining #oregeology

#Frankenberg #Sachsenburg #bleiberg #katjamoslehner http://www.katjamoslehner.de sehr schönes Event der Enthusiasten vom Bleiberg