The Block K uranium-vanadium mine, also known as the Mike Brodie No.6 mine, was located in the northwestern Carrizo Mountains, Apache County, Arizona. The mine was developed as the result of gamma-ray logging of a seismic shot hole drilled for an oil company survey. Drilling by the U.S. Atomic Energy Commission (AEC) adjacent to the mineralized shot hole located four single hole ore bodies. Drilling by a private company adjacent to one of the AEC ore holes located additional ore, which became the mine. LOCATION The Block K uranium-vanadium mine was located approximately 11 miles west of Teec Nos Pos, Arizona (Figure 1). It was in the northwest Carrizo mining area In this area, the majority of the mines are located on the Toh Atin Anticline. This structure extends from Black Rock Point of the Carrizo Mountains, northwesterly across Marin Mesa to Toh Atin Mesa before it loses its identity. The Block K mine is on the northeast flank of the anticline in the sand covered plain that extends from the anticline to East and West Red Mesas (Figure 1). When the mine was being operated it could be reached by traveling west from Teec Nos Pos and Navajo Route 1 (now U.S. 160) for 9.6 miles passed the turnoff on the left to the main mining area. Continue one mile and turn left on to a sandy, bulldozer road. The mine is located 2.4 miles southwesterly down this road.