The State provided the following information via email:
Received notification on 7-9-06 from Mississippi Emergency Management (MEMA) that a Troxler 3440 moisture/density gauge, Serial # 31576, had been involved in a fire at a residential location. The gauge was chained and locked in its approved DOT transportation container to the bed of the pick-up truck. A neighbor had seen the fire and called 911. Ridgeland Fire Department extinguished the truck fire and secured the area. DRH responded to the incident and removed the melted gauge from the truck bed. Survey readings were taken at the truck after the gauge was removed and determined to be background (9 microR/hr).
DRH responded to the scene and removed the gauge from the bed of the pickup. Gauge was secured in a plastic garbage bag and placed in DRH vehicle. Cesium-137 source rod was shielded with a lead pig. Gauge was brought to DRH office where leak tests were performed and gauge was stored until pick-up by disposal contractor.
Isotopes: Cesium-137 (9 mCi) and Americium-241/Be (40 mCi)
Survey readings were 95 mR/hr near the end of the Cesium-137 source rod. Survey readings of the Americium-241/Be source were 5 mR/hr. Survey readings of the sources in the bed of the DRH vehicle after shielding them were 15 mR/hr. Sources were leak tested by DRH and appear not to be leaking.
- * * UPDATE FROM S. SMITH TO W. GOTT AT 1006 ON 7/13/06 * * *
Updated to correct units of the background radiation levels and the survey readings.