Archive for September 19th, 2021

FIRST UNDERGROUND NUCLEAR EXPLOSION

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On September 19, 1957, the United States detonated a 1.7-kiloton
nuclear weapon in an underground tunnel at the
Nevada Test Site
(NTS), a 1,375-square-mile research center located 65 miles north
of
Las Vegas. The test, known as Rainier, was the first fully contained
underground detonation and produced no radioactive fallout. A
modified W-25 warhead weighing 218 pounds and measuring
25.7 inches in diameter and 17.4 inches in length was used
for the test. Rainier was part of a series of 29 nuclear weapons
and nuclear weapons safety tests known as Operation Plumbob
that were conducted at the NTS between May 28, 1957, and
October 7, 1957.

 

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posted by Bob Karm in ANNIVERSARY,Explotion,HISTORY,Nuclear and have No Comments