Show geiger counter in car spots U ore the U S geological survey has prospected for uranium with a car mounted geiger gelger counter 1945 the basic principles of the car tra verse technique are simple locks and 3 ot of abnormally high uranium or thorium I 1 content are s surrounded ur rounded by an equivalently high gamma radiation field an abnormal gamma radiation field that extends across a road or high way can be detected at relatively high speeds by a car or truck equipped with a suitable geiger counter once detected by car traversing tra the deposit can be examined with light portable in st and the better portions sampled the prime advantage of the car traverse technique is the rapidity of 0 the scanning process to miles per day which permits exploration of large area areas in a short time |