  An airborne high sensitivity gamma-rayspectrometer and magnetometer survey was conducted over eleven (00) 0 0 x 0 0 NTMS quadrangles located in the states of Minnesota and Wisconsin and seven (0) 0 0 x 0 0 NTMS quadrangles in North and South Dakota. The quadrangles located within the North and South Dakota survey area include Devil's Lake, New Rockford, Jamestown, Aberdeen, Huron, Mitchell, and Sioux Falls. This report discusses the results obtained over the 