NAMS. North American Membrane Society  
   USA. Non-profit organization for researchers, technologists and end-users of synthetic membrane science and technology. Searchable data base of technical articles.
   http://www.che.utexas.edu/nams/NAMSHP.html

NAGS. North American Geosynthetics Society  
   USA. Non-profit membership organization, dedicated to the scientific advancement and engineering development of geosynthetics products, applications and technology. Searchable database of companies, articles and links to related sites.
   http://www.nagsigs.org/

IECA. International Erosion Control Association  
   USA. Non-profit, member organization, dedicated to providing education, resource information and business opportunities for professionals in the erosion and sediment control industry.
   http://www.ieca.org/

ECTC. Erosion Control Technology Council  
   USA. Non-profit organization, dedicated to the development of performance standards, uniform testing procedures, and guidance on the application and installation of rolled erosion control products. List of publications. Links to related sites.
   http://www.ectc.org/

NCBI. National Cotton Batting Institute  
   USA. Membership organization for manufacturers of cotton batting for mattresses and upholstery, and suppliers of linters and textile by-products, and allied business. Company directory. Links to related sites.
   http://www.natbat.com/

Norwegian Geotechnical Institute  
   Private foundation conducting research and development and offering advisory services. Institite history, news and publications.
   http://www.ngi.no/english/default.htm

Swedish Geotechnical Society  
   Promote and stimulate development of all aspects of soil mechanics and foundation engineering. Includes historic aspects, publications and contacts .
   http://www.sgf.net/english/index.asp

IGS. International Geosynthetics Society  
   Membership association, dedicated to scientific and engineering development of geotextiles, geomembranes, related products and associated technologies.
   http://www.geosyntheticssociety.org/

Center for Geotechnical Practice and Research  
   Collaboration of geotechnical consulting firms, specialty contractors, and government agencies in association with Virginia Polytechnic Institute. Conducts training programs, meetings, and other exchanges. Site includes information about activities and sy
   http://cgpr.ce.vt.edu/

Alliance of Deep Foundation Testing Professionals  
   USA. Organization for professionals involved in the testing and analysis of deep foundations. Includes a members listing, meetings and conferences, and related links.
   http://www.insitutech.com/aptinfo.html

EFFC. European Federation of Foundation Contractors  
   UK. Trade organization for European contractors for foundation construction and geotechnical processes. Members directory. List of conferences and symposia.
   http://www.effc.org/

ADSC. The International Association of Foundation Drilling  
   USA. International trade organization for the drilled shaft, anchored geo-support, and related industries. Links to conferences, seminars and training activities. Calendar of events. Publications. Extensive members directory. Links to related sites.
   http://www.adsc-iafd.com/

GMA. Geosynthetic Materials Association  
   USA. Trade organization for North-American manufacturers and traders in geosynthetic materials. Resources and technical articles. Members' directory. Links to related sites.
   http://www.gmanow.com/

IAGI. International Association of Geosynthetic Installers  
   USA. International trade organization for installers of geosynthetics and geomembranes. Searchable company directory. HDPE geomembrane installation specifications. Technical information on PDF files. Links to organizations and educational institutes, publ
   http://www.iagi.org/

Geo-Institute  
   Semi-autonomous institute within the American Society of Civil Engineers. Membership organization for professionals in the geotechnical industry. Calendar of events. Publications and industry news. Links to related sites.
   http://www.geoinstitute.org/