Cecil Kelley criticality accident, Accident site in New Mexico
The Cecil Kelley criticality accident occurred at the Los Alamos National Laboratory.
It was one of the early criticality accidents, happening on December 30, 1958.
Criticality safety measures improved after the incidents like Cecil Kelley's.
Entry to the specific accident site is restricted due to its history.
The accident released a significant amount of radiation in just 200 microseconds.
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