Fresh high-resolution imagery of the Trinity test, restored from 1945 footage, records the fireball expanding to hundreds of meters wide 0.016 seconds after detonation with billboards visible 200 meters from ground zero. The North 10,000 bunker housed Berlyn Brixner operating Mitchell and Fastax cameras through a glass porthole, yielding the primary sequence used for initial yield measurements as cited in Los Alamos National Laboratory archives. Only 11 of 52 cameras produced usable frames despite staggered distances and frame rates, according to Julian Mack's post-test report. Herbert Lehr delivered the plutonium core to the McDonald ranch house on 12 July 1945 per Manhattan Project records. Spectrographic data from the event established baseline expansion rates referenced in declassified Atomic Energy Commission documents.