Original U.S. Vietnam War Era Operation Igloo White Seismic Sensor ADSID III

Original Item: Only One Available. Using the cover of darkness, dense jungle and bad weather, North Vietnamese trucks carried critical supplies down the Ho Chi Minh Trail nearly undetected. Since large numbers of American ground troops were not permitted into neutral Laos to stop the trucks, the U.S. Air Force deployed a system of electronic seismic sensor equipment to thwart the enemy's cover and alert U.S. commanders. This highly-classified electronic system was known as Project Igloo White. The sensors were dropped from aircraft along the Ho Chi Minh Trail, and were essentially a giant lawn dart. The sensor would fall to earth and then penetrate the ground. The end of the sensor would protrude from the ground, with the antenna pointing vertically. The sensor’s antenna was camouflaged to be mistaken for foliage in the dense jungle undergrowth. The thought behind the project was to estimate movements of vehicles and troops along the Ho Chi Minh Trail, and once large seismic readings w