No uncontrolled reaction at Fukushima: operator

The operator of Japan's crippled Fukushima atomic plant Thursday played down fears of an uncontrolled chain reaction at the site, despite the discovery of evidence of recent nuclear fission.

Criticality experiment succeeds at CEF in Nevada

On June 15 a team of researchers at DOE's Los Alamos National Laboratory brought the Planet criticality assembly machine located at the Nevada National Security Site to a supercritical point for approximately eight minutes, ...

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