Operation Plumbbob - 1957 - Nuclear Museum
Operation Plumbbob - 1957 - Nuclear Museum
Jun 6, 2014
nuclearmuseum.org
The incident was part of Operation Plumbbob, a series of nuclear tests in 1957. Scientist Dr. Robert Brownlee later analyzed high-speed camera footage, calculating the plate's insane velocity. Whether it actually achieved orbit is debated; many physicists believe it would have vaporized from atmospheric friction. The U.S. government never confirmed its fate, and the plate was never tracked or recovered, leaving its final destination one of history's intriguing scientific mysteries. Its speculate
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Operation Plumbbob’s “Manhole Test” (officially known as Pascal-B) was a U.S. nuclear test conducted in 1957 at the Nevada Test Site. It involved detonating a small nuclear device in a deep underground shaft capped with a steel manhole cover. The goal was to study high-energy explosive effects and containment methods. The test unintentionally launched the steel cap at an extraordinary speed, possibly exceeding Earth’s escape velocity (~11.2 km/s), making it one of the fastest manmade objects. Wh
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