RE: Unknown Sealed Sources

["William G. Nabor" <wgnabor@uci.edu>]

Don Collins & Associates is now MXE, Inc.
                                6917 Vista del Mar
                                Playa del Rey, CA 90293
                                Contact Henry Cortez
                                (800) 252-1801


In Message Wed, 23 Aug 95 09:12:50 -0500,
  "Cappas, Mike" <cappas@mdaw.mdc.com> writes:

>We have two sealed sources that are labeled Ra-DE. Does anyone know what the DE
>stands for.
>
>Some background information:
>They are part of a Beta Source Set sold by Don L. Collins & Assoc. of Glendale,
>CA (1979). Both sources are red-colored, half-disks, which make a 1-inch disk
>when placed side-by-side. They are not labeled with any activity (only Ra-DE),
>but are definitely radioactive (Ra-226, I assume).
>
>I tried contacting Don L. Collins & Assoc., but they do not seem to exist any
>more.
>
>Any help would be greatly appreciated. Thanks...
>
>Michael Cappas
>cappas@mdaw.mdc.com
>
>McDonnell Douglas Aerospace
>Space & Defense Systems
>Huntington Beach, CA