The following information was received from
Texas Department of State Health Services:
At approximately 8:45 a.m. the gauge operator had just completed a density test on the site of Wheatley High School, where a new high school is being constructed, when a bulldozer, belonging to another contractor working at the job site, made a sudden and unexpected move toward the operator, who was performing calculations beside the gauge. During the movement the bulldozer operator dropped the blade of the vehicle which impacted the Troxler Model 3430, Serial No. 25129 moisture density gauge. The gauge was crushed with damage to the housing. The gauge contained two sealed sources: Cs-137, nominal 8 millicuries, Serial No. 75-7305 and Am-241/Be, nominal 40 millicuries, Serial No. 47-21337. The sources were not damaged nor leaking. The gauge control rod was in the up and locked. A survey of the area determined that no leakage where the gauge was crushed or to the blade of the bulldozer. The gauge was transported to Component Sales and Services (L02243-000) for leak testing and determination of possible repair. The gauge was determined to be not repairable. The gauge was transferred to Component Sales and Services for disposal. The gauge was last leak tested on April 4, 2004, with negative test results.
Texas Incident No. I-8161.