History
Mining with a long tradition

Historical photo: factory building with smokestacks wreathed in white smoke; the river Mosel in the foreground
Dolomite has been mined in Wellen, on the Mosel river, for over 130 years.
© PORR

Since the late 19th century, we at Trierer Kalk-, Dolomit- und Zementwerke (now TKDZ) have been quarrying dolomite rock in Wellen on the Moselle. In the spirit of sustainability, we now, as a recognised recycling company, backfill the resulting voids with approved mineral substitute building materials. Combining tradition with innovative strength, we champion modern and sustainable mining and take responsibility for our environment and future generations.

Historical photo: Mine train and a group of miners pose in front of the entrance to an adit bearing the inscription "Franz H. Hansen Stollen 1925".
Aerial view: modern factory facilities in the midst of green and wooded areas

TKDZ
Quality for almost 150 years

1881

Johann Itschert founded what would later become “Trierer Kalk- und Dolomitwerke J. Itschert & Co.”; permission was granted to build two lime kilns.

1926

Acquisition of the company by Rheinisch-Westfälische Kalkwerke AG.

1929

At the age of 23, Josef Schnuch becomes a deputy board member.

1951

Josef Schnuch acquires TKDZ.

1965

The current Josef Tunnel is being excavated. From now on, mining will take place exclusively underground.

1970

Dolomitwerke Wülfrath GmbH acquires TKDZ from Josef Schnuch, who continues to play an active role in the company until 1976 as managing director and thereafter as a member of the advisory board.

2002

Winfried Meseke, an entrepreneur from Trier, acquires TKDZ.

2012

TKDZ is joining the PORR Group.

2013

In order to ensure a balanced and sustainable extraction of dolomite, backfilling with non-mining material is being carried out for the first time in addition to mining in the Josef Tunnel.

2014

The company has obtained approval for a framework operating plan through 2069.

2016

Establishment of an in-house mine rescue team.