Submission + - SPAM: Russia Declassifies Footage of the Largest Nuke Ever Tested
It's difficult to truly get across how powerful RDS-220 was. The mushroom cloud reached an altitude of 210,000 feet, and people observed the flash through bad weather at 621 miles. An observer felt heat from the explosion at a distance of 168 miles, and the bomb was capable of inflicting third-degree burns at 62 miles.
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