These downloads contain latest Customer Engineering Notices(CENs) that have been issued 
by Sondex Drilling, Geolink UK Ltd.

Current contents 
CEN 100 (28/02/2005) - CEN 119 (07/08/2006)
CEN 120 (07/08/2006) - CEN 140 (08/06/2007)
CEN 141 (07/06/2007) - CEN 157 (18/12/2007)

These files are updated as new CENs are released.

The zip files in this directory are password protected.
Please email gsupport@sondex.com or call +44 7850 786671 to obtain the password.