A Washington River Protection Solutions worker initiated a "stop worker" order late Monday, questioning the contractor's Beryllium controls at the tank farms.

Managers are meeting with that employee to better understand and resolve the concern. WRPS said in a statement, "stopping work is not only a right, it is the responsibility of all WRPS workers who feel there is a safety issue."

Monday was also the first day of the revised Beryllium Postings and Labeling Requirements Procedure.

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