A friend contacted me and asked to post this message to RADSAFE. A 300 mCi Am-241 source is available to a properly qualified license holder. This source was used in an industrial sized thickness guage. The original manufacturer was Nucletronics(sp?). If you have specific questions please contact Rick Titolo 404-303-5975 or you can email me at Jamie Mallon jamemallon@aol.com