|
American Underground Construction Association (AUA) |
http://www.auaonline.org |
|
International Tunneling Association (ITA) |
http://www.ita-aites.org |
|
British Tunneling Society |
http://www.britishtunnelling.org |
|
Society for Mining, Metallurgy & Exploration (SME) |
http://www.smenet.org |
|
Rapid Excavation & Tunneling Conference (RETC) |
http://www.retc.org |
|
American Public Transportation Association (APTA) |
http://www.apta.com |
|
American Concrete Institute (ACI) |
http://www.aci-int.org |
|
American Rock Mechanics Institute (ARMA) |
http://www.armarocks.org |
|
American Society for Civil Engineers (ASCE) |
http://www.asce.org/ |