"A group of 21 correspondents and photographers walked all over the area where the first atomic bomb in history was exploded. They wore no protective clothing except light canvas booties over their regular shoes. They went into the core of the bomb crater where radio activity would be hottest... Told they could enter the crater, they looked for a deep jagged pit such as the traditional explosive bomb digs. Instead, the huge atomic crater was like a plate with a saucer in its center... The center of the saucer, which was directly beneath the bomb, was 300 feet across and another 10 feet deep in its center. The surface of the depressed area was smooth... They picked up and pocketed pieces of the atom-fused earth crust that covered the area like a sheet of gray-green, crackled glass."
- from Amazon: