Workers in Los Alamos National Laboratory’s plutonium facility tracked contamination throughout a waste staging area, according to a Defense Nuclear Facilities Safety Board report this month, alarming radiation monitors in the basement.

The area was labeled a “high contamination area” in response.

But when a fact-finding meeting was held a few days after the incident, corrective measures couldn’t be developed, the report states, after the group of workers responsible for the waste didn’t show.

A lab spokesperson attributed the absence to missing information.

“At the time the meeting was scheduled it was not clear which group had generated the waste,” Steven Horak wrote in an email . “Because that information was not available, that group was not specifically invited to participate. T

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