| In 1898:
beginning
of barytes production in the Wolfach Mine in the Black Forest. |
| |
| In 1926:
foundation of the Sachtleben AG for mining and chemical industry,
Cologne. |
| |
| In 1957:
beginning of the barytes production in the Dreislar Mine in the
Sauerland. |
| |
| In 1970:
integration of the Sachtleben AG into the Metallgesellschaft AG Group,
later called mg technologies ag, now: GEA Group. |
| |
| In 1990
and 2004: acquisition of 25% and 50% of the shares
in the Deutsche Baryt- Industry, Bad Lauterberg. |
| |
| In 2002: foundation of Sachtleben Bergbau GmbH by way of a management-buy-out. |
| |
| In 2009: change of corporate name to Sachtleben Bergbau GmbH & Co. KG |
| |
| In 2010: relocation of head office from Lennestadt to Hausach |