2008 Geoprobe Model 7720DT 2007 Geoprobe Model 7720DT 2006 Geoprobe Model 54LT 2005 Geoprobe Model 540B 2004 Geoprobe Model 6620DT 2004 Geoprobe Model 6600 2004 Geoprobe Model 5410 2004 Geoprobe Model 6600PC111 2003 Geoprobe Model 5400 2003 Geoprobe Model 540B 2002 Geoprobe Model 6610DT 2001 Geoprobe Model 540UD 2001 Georobe Model 5410 2001 Geoprobe Model 5410 2001 Geoprobe Model 5410 2001 Geoprobe Model GS2000 2000 Strataprobe 1999 Geoprobe Model 5400 1998 Geoprobe Model 540 1998 Geoprobe Model GS1000 1997 Geoprobe Model 54DT 1994 Geoprobe Model 5400 1994 Brown Cargo Utility Trailer 1995 Geoprobe Model 5400