The following information was obtained from the State of
Texas via email:
On November 18, 2011, the Agency [Texas Department of State Health Services] was notified that a licensee had lost, and subsequently abandoned, a logging tool containing a 20 milliCurie cobalt (Co)-60 sealed source at a depth of approximately 5,100 feet down a well in Matagorda County, Texas. The well is a brine solution well that was converted to gas storage; it is a domed salt cavern. There is no rig on the well and the source is at the bottom of the cavern. There is no danger of rupture or exposure. There are no plans to enter the well or cavern in the near future with tubing or wire line. No further action will be taken to retrieve the tool.
Source information: 20 milliCurie Cobalt-60
Manufacturer: Eckert and Ziegler
Model: HEG-060
SN: CZ3507
Texas Incident No.: I-8906