Warren was personally responsible for the safety aspects of the Trinity nuclear test on 16 July 1945 at Alamogordo , New Mexico . There was considerable concern about radioactive fallout and a network of geiger counters was established to track the fallout cloud . Groves found Warren at the base camp shortly after the explosion and was displeased to discover that Warren had been awake for the previous 48 hours . Groves had US Navy Captain George Lyons take over so Warren could get some rest . Fortunately , no problems arose with the test
Trinity nuclear test
Trinity (nuclear test)
Stafford L. Warren