San Antonio, New Mexico learned the hotel trade there. Hilton was one of the original legislators in the newly formed state of New Mexico, and founded the Hilton Hotels Corporation. San Antonio is about 28 miles from Trinity Site, where the first nuclear bomb was detonated on July 16, 1945. Residents reported tremors like an earthquake and the town received some of the remnants of the mushroom cloud, resulting in some radioactive contamination of the area, which faded quickly and does not persist today. The town was the meeting place for the scientists who detonated the bomb. San Antonio, New Mexico San Antonio is
Mark 4 nuclear bomb Mark 4 nuclear bomb The Mark 4 nuclear bomb was an American nuclear bomb design produced starting in 1949 and in use until 1953. The Mark 4 was based on the earlier Mark 3 Fat Man design, used in the Trinity test and the bombing of Nagasaki. The Mark 3 was essentially handmade and constituted an emergency wartime expedient design; the Mark 4 utilized essentially the same basic principles (materials, dimensions of the nuclear core and explosive components) but reengineered the overarching system to be safer and easier to produce. The basic idea was to "GI-proof" otherwise sensitive nuclear weapons.