On August 31, 2010, the NRC issued a Notice of Violation to St. Louis Testing Laboratories, Inc., for a Severity Level III violation involving the failure to ensure each individual who acts as a radiographer or a radiographer's assistant wears a direct reading dosimeter, an operating alarm rate meter, and a personal dosimeter at all times during radiographic operations as required by 10 CFR 34.47(a). Specifically, on October 22, 2009, a radiographer inadvertently left his personal dosimeter in a tool bag inside a permanent radiographic cell while performing radiographic shots.