​ Tshwane University of Technology, Pretoria, South Africa (2014 – today)

In South Africa, I have a research chair, which deals with questions about acidic mine water in South Africa. I investigate the influence of mine water on groundwater and deal with hydrogeochemical questions.

Lappeenranta University of Technology, Mikkeli, Finland (2014 – 2018)

In Finland, I held a Finnish Distinguished Professor Chair (FiDiPro) which dealt with questions on mine water. I investigated active and passive ways of remediating mines and carried out a tracer test at the abandoned Metsämonttu mine.

Cape Breton University, Sydney, Canada (2008 – 2012)

At the Cape Breton University in Canada, I had a research chair, with the aim of clarifying the open questions on the mine water in the Cape Breton Island coal mines. I investigated the hydrogeological and hydrogeochemical characteristics of the mines and carried out tracer tests in a passive ine water treatment system and a network of flooded underground coal mines.

Ludwig Maximilians Universität, Munich, Germany (2006 – 2008)

I gave lectures and exercises on hydrogeology at the LMU in Munich. In addition, I dealt with mine water discharges in southern Bavaria and geothermal as well as classical hydrogeological questions.

Technical University Bergakademie Freiberg, Freiberg, Germany (1999 – 2006)

My two independent lectures at the TU Bergakadmie Freiberg focused on tracer tests and hydrogeochemistry. I also gave lectures on behalf of Prof. Dr. habil. B. Merkel.

Technical University Clausthal, Germany (1988 – 1989, 1991 – 1995)

At the TU Clausthal, under the guidance of Dr. M. Schönfeld (†), I conducted tectonic exercises and guided by Prof. Dr. G. Reik (†) engineering geological exercises and laboratory courses. In addition, I guided geological seminars.