Carried to Hiroshima from Tinjan Island by the Enoly Gay, a U.S. Army B-29 bomber, the first atomic bomb used in the history of humankind exploded approximately 600 meters above this spot. The city below was hit by heat rays of approximately 3,000 to 4,000 °C along with a blast wind and radiation. Most people in the area lost their lives instantly. The time was 8:15 a.m., August 6, 1945.