1. General: During Operation Total Victory 8/B/5 excursion into
Cambodia, General Hieu secretly inserted two operations implanting sensors
around Snoul. The purpose of the implant was to gather intelligence concerning
the movement of personnel in the Snoul area after friendly units had been
withdrawn. The types of sensors used were seismic and magnetic. The devices were
to be monitored by the US 1st Cavalry Division from a site on Nui Ba Ra
a/ Three Electronic Combat Teams consisting of approximately fifteen men
were used on the sensor implant operation.
b/ On 6 and 8 November 1970, a total of forty sensors were implanted in
eleven strings. The devices were implanted by hand and airdropped using VNAF
helicopters. The main areas of concentration were along road networks to the
north and south of Snoul.
c/ After implant, it was discovered that the monitoring cite at Nui Ba Ra
was unable to pick up signals from the devices. A decision was then made to
establish an alternate site at Loc Ninh. The station was monitored 24 hours a day
by 5th ARVN Division personnel.
Tab A: Location of Devices Implanted 6 November 1970