The North Korea nuclear test in early September 2017 was so powerful that it resulted in an entire mountain being lifted off the ground and was the equivalent of "17 times the size of the bomb dropped on Hiroshima," according to a new study.
"The amount of energy released when the nuclear bomb was detonated was equivalent to up to 271 kilotonnes (kt) of TNT," the study's lead author, Kattumadam Sreejith, said in comments obtained by the British news agency SWNS.
By comparison, the nuclear weapon that was detonated over Hiroshima during World War II, colloquially known as "Little Boy," had a yield of 15 kilotonnes.
Source: North Korea nuclear test equivalent to '17 times the size' of Hiroshima