On May 8, 1953, flying overhead at 19,000 feet, a B-50 bomber dropped a 27-kiloton nuclear device. Detonating at 2,323 feet, the bomb blew sections of the railroad trestle from its foundation and bent the girders. Additional structures in the area were constructed to measure the impact of other atmospheric tests. The Nevada Test Site, 65 miles north of Last Vegas, may be visited on a free tour offered once each month by Bechtel Nevada, the site’s contractor.
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