2008 Geoprobe Model 7720DT 2007 Geoprobe Model 7720DT 2006 Geoprobe Model 54LT   2006 Geoprobe Model 540MT 2006 Geoprobe DP800 Injection Pump 2006 Geoprobe Model 5400 2004 Geoprobe Model 5410 PC100 2004 Geoprobe Model 5410 2004 Geoprobe Model 6600PC111 2003 Geoprobe Model 6610DT  2003 Geoprobe Model 5400 2003 Geoprobe Model 540B 2001 Georobe Model 5410 2001 Geoprobe Model 5410 2001 Geoprobe Model 5410 2001 Geoprobe Model GS2000 2000 Strataprobe 1998 Geoprobe Model 66DT 1998 Geoprobe Model GS1000 1997 Geoprobe Model 54DT 1994 Geoprobe Model 5400 1995 Geoprobe Model 5400