In 1944 , scientists at Los Alamos Scientific Laboratory designed field experiments to measure the air blast and ground shock effects from the Trinity device . In March 1945 , an exploration geophysicist Herbert M. Houghton , from Geophysical Research Corporation ( GRC ) and Tidewater Oil , was hired to work with Coon . The team of Coon and Houghton was tasked to make ready the earth shock instrumentation for the 7 May 1945 calibration rehearsal shot of a 100-ton TNT device and the Trinity test in July 1945
Trinity
Trinity (nuclear test)
James H. Coon