Ooops. This 'underground' nuclear test in 1970 went badly. A ten-kiloton weapon, buried 900 feet in the ground, accidentally vented radiation 10,000 feet in the air, exposing test site employees and downwind communities to radioactive fallout.
18 December 1970
Yucca Flats, Nevada Test Site United States

Ooops. This 'underground' nuclear test in 1970 went badly. A ten-kiloton weapon, buried 900 feet in the ground, accidentally vented radiation 10,000 feet in the air, exposing test site employees and downwind communities to radioactive fallout.

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Image ID number: 50569