Geological Soil surveys You will soon find the website of Geoservice Soltenborn GmbH under this domain. The GmbH is an amalgamation of the geologists Jan Hollenstein and Walter Soltenborn. You can currently find further information at: hollenstein.biz geo-service-soltenborn.de GEOSERVICE Soltenborn GmbH Buschhäuserweg 18 | 52066 Aachen www.geoservice.ac | mail@geoservice.ac Telephone 0241/4634685 Fax 0241/4634686