A schematic picture of a generic TA station vault setup can be found at the Array Network Facility (ANF) webpage http://anf.ucsd.edu/about/.
Documents with a high level description of TA site design are available in USArray publications here:
http://www.usarray.org/researchers/pubs
Photos at many sites are available from the ANF station list:
http://anf.ucsd.edu/stations.php. Select a station and go to Station Details, Photographs.
Last Updated
8th of December, 2011