This section of the ASTT website can only be accessed if you are a financial member of the Society. To become a member of the ASTT, please follow this link.  Contained within this restricted area is the International Society for Trenchless Technology (ISTT) Technical Resource Centre's (TRC) new technical section. 
The core of the TRC is the 'Conference Papers' database currently containing some 600 papers presented at the International No-Digs from 2000 - 2004 and the NASTT No-Dig Shows 2001 - 2004.

To access the ISTT Technical Resource Centre, click on the ISTT logo under and proceed to log on as directed.