Prof. Horst Rüter is President of HarbourDom Consulting, Cologne, Germany, IGA Service GmbH, Bochum, Germany after 32 years as head of the Geophysics Department of DMT. He nurtured the growth of this organization from a small research group of the German coal mining to one of Germany’s most important private geophysical contractors. During that time he was responsible for more than hundred research projects for international public and commercial agencies, and for the Mining and Oil/gas- industry. He contributed significantly to the development of 3D-seismic methods from 1975 onward. He holds patents on seismic instrumentation and on specific logging instruments. His emphasis has been to integrate geophysical techniques into mining and borehole applications. Horst holds a Ph.D. from the Ruhr-University in Bochum, where he is now a part time professor. He is member of many professional societies and on several editorial boards and professional steering groups. Presently, he serves as Vice-President of the Bundesverband Geothermie e.V. (BVG), as board member of the International Geothermal Association (IGA) and as board member of the Geounion – Alfred Wegener Stiftung. Horst is widely published and wrote a textbook in in-seam seismics. He received in 2001 SEG’s Special Commendation Award, 2005 EAGE’s Conrad Schlumberger Award for taking geophysics beyond its boundaries and the Patricius Medal for lifetime contributions to geothermal.