WARNING January 11, 1951 From this day forward the U.S. Atomic Energy Commission has been authorized to use port of the Las Vegas Bombing and Gunnery Range for test work necessary to the atomic weapons development program. Test activities will include experimental nuclear detonations for the development of atomic bombs - so-calied “A-Bombs” — carried out under controlted conditions. Tests will be conducted on a routine basis for an indefinite period. NO PUBLIC ANNOUNCEMENT OF THE TIME OF ANY TEST WILL BE MADE Unauthorized persons who pass inside the limits of the Las Vegas Bombing and Gunnery Range may be subject to injury from or as a result of the AEC test activities. Health and safety authorities have determined that no danger from or as a result of AEC test activities may be expected outside the limits of the Las Vegas Bombing and Gunnery Range. All necessary precautions, including radiological surveys and patrolling of the surrounding territory, will be undertaken to insure that safety conditions are maintained. Full security restrictions of the Atomic Energy Act will apply to the work in this area. RALPH P. JOHNSON,Project Manager Las Vegas Project Office U.S. Atomic Energy Commission Figure 8. AEC handbill announcing the beginning of the RANGER tests. 82