• 1898  Start of barite production at Clara mine in Oberwolfach / Black Forest
  • 1926  Foundation of Sachtleben AG für Bergbau und chemische Industrie, Cologne
  • 1957  Commencement of barite production in Dreislar / Sauerland
  • 1970  Integration of Sachtleben AG into the Metallgesellschaft AG group, Frankfurt, later renamed mg technologies, today GEA Group
  • 1978  Start of fluorite production in Wolfach
  • 1990  Acquisition of 25 % interest in Deutsche Baryt-Industrie, Bad Lauterberg
  • 2002  Legal independence of Sachtleben Bergbau GmbH through management buy-out
  • 2004  Acquisition of additional 50 % interest in Deutsche Baryt-Industrie, Bad Lauterberg
  • 2009  Change of company’s legal status into Sachtleben Bergbau GmbH & Co. KG
  • 2010  Relocation of corporate headquarter from Lennestadt to Hausach
  • 2015/16  Sachtleben Minerals