Professional society for engineering geologists and environmental geologists.
Visit Association of Environmental and Engineering Geologists (AEG)
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TenCate Mirafi
Manufacturers of geosynthetic products including geotextiles, geogrids and geocomposites. Visit TenCate Mirafi
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Geoengineer Group
Partially affiliated with the Geoengineer.org website, this Yahoo! Group has over 900 members that submit geotechnical questions for the entire membership to respond on. Visit Geoengineer Group
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Geotechnical Engineering Directory
They claim to be the most comprehensive Geotechnical Engineering directory on the web. Around since 1999. Visit Geotechnical Engineering Directory