Documents / Report
This is the final report of the Scientific Study of Unidentified Flying Objects, conducted by the University of Colorado under Air Force contract F44620-67-C-0035, with Edward U. Condon as scientific director and Daniel S. Gillmor as editor. It was submitted to the National Academy of Sciences on 15 November 1968 for review. The report includes field studies, photographic and radar analyses, case studies, historical chapters and appendices such as the Robertson Panel report and the Twining letter.
dt \~hich the persollnel had no spcdal interest in the UFO question. 'l1H:' neutron irradiation am) galflmu spectrometry were personally ob- served by this ,.,.riter. The analysis was performed by Mr. Maynard .J. Pro, Assistant Chief, Research and Methods Evaluation, and his associ- ates. Original irradiatLon data and gamma-spectrometer read-out tapes are preserved in project files. The material irradiated was a chip broken from the main fragment. It wa.s immersed in Hel to remove surface contamination. After washing, the sample presented a bright, shiny, metallic surface. The absence of chlorine emis~ions in the gammn-ray spectra after neutron activation showed both that washing had been thorough and that chlorine was not present in the sample itself. '111e concentrations of eight impuri ty elements were measured. Results are given in parts per million parts of sample, with limits of error estimated on the basis of greatest conceivable errOL The "UFO fragment" compared with the Dow material as follows ~ Parts Per Million Br;::.zil UFOElement Dow ~ig. ----- :..._----------,----- Al :n 1I~ Cr Cu an Sr 4.8 ± 0.5 not detected «5 ) S. ± 1. 2.6 ± n.s 5 . ~) ± .12 0,4 :± 0.2 not detected not detected 35.0 ± S. not detected (~10) 500. ± 100. not detected .,2.0 ± 10. 3.3 ± 1.0 l(ll). + 20. 5I") f). ~. I 0 () . 141 dt \,hicl, the persollllel had llO spcdal interest in the UFO question. I1H' neutron irradiation am] gamma spectrometry were personally ob- served by this \~ri tel'. The analysis was performed by Mr. Maynard .J. Pro, Assistant Chief, Research and Methods Evaluation, and his associ- ates. Original irradiatlon data and gamma-spectrometer read-out tapes are preserved in project files. The material irradiated was a chip broken from the main fragment. It wa.s immersed in lIel to remove surface contamination. After washing, the sampJe presented a bdght, shiny, metalUc surface. The absence of chlorine emis~ions in the gammn-ray spectl'e> after neutron activation showed both that washing had been thorough and that chlorine was not present in the sample itself. '111e concentratloH1; of eight impurity elements were measured. Results are given in parts per million parts of sample, with linli ts of error estimated on t1i() basis of greatest conceivable errOL The "UFO fragment" compared with the Dow material as follows~ Element Al :n llg Cr eu 3a 51' Parts Por Million ~___[).ow ~i~:...._________H-=r-=-;l:..:z::..i_l~-=-U::...FO=-__ ~.8 not 5. 2.b S . ~) 0.4 not not ± 0.5 detected :t I . ± O.S ± .12 t 0.2 detected detcctl'u 141 «5 ) .35.0 ± 5. not detected «10) 500. ± 100. m)t d.etected 32.0 ± 10. 3 ..'):t1,(} H)IJ. ± 20. SO£). • 100.
Report, from the classic collection. The PDF is mirrored here; the original link is under it. 1497 pages are in the text index: search them above, or from the library's search.