Documents / Official release
This 2023 synopsis from the All-Domain Anomaly Resolution Office (AARO) in the Office of the Secretary of Defense covers Oak Ridge National Laboratory's analysis of a layered magnesium-zinc specimen with bismuth and lead bands. The specimen is claimed to come from a UAP crash around 1947 and to act as a terahertz waveguide. Microscopy, spectroscopy and isotope analysis found that its magnesium and lead signatures are terrestrial and that its impure, layered bismuth could not have worked as a waveguide.
7 Figure 7. Lead (Pb) isotope systematics of the unknown material, shown relative to other terrestrial and non-terrestrial materials in 206Pb/204Pb vs. 207Pb/206Pb. This plot has three end-member compositions: (1) primordial lead, which is the starting composition of the lead in the solar system; (2) pure radiogenic lead from the decay of naturally occurring uranium; and (3) terrestrial lead or “common lead,” which is defined by repeat analyses. The specimen has a lead isotopic composition that plots precisely in the field of terrestrial lead compositions. SRM stands for standard reference material, materials typically used to perform instrument calibrations due to their well-characterized composition or properties, as measured and certified by the U.S. Department of Commerce’s National Institute for Standards and Technology. 0.000 0.000 0.200 0.400 0.600 0.800 1.000 1.200 1.400 0.020 0.040 0.060 0.080 0.100 0.120 207Pb/206Pb 204Pb/206Pb Silver Coins Industrial Pb Galena Airborne Particulate Matter Feldspars Meteorite Troilite Mars SRM-982 measured SRM 982 SRM 981 SRM 983 Pacific Ocean Sulfides Lunar Glasses Gasoline Sample A012 Page determined to be Unclassified Reviewed by Chief of Staff, AARO IAW FY24 NDAA, Section 1841 (a)(1)(C) Date: 02/06/2025
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Official release, from the nara collection. The PDF is mirrored here; the original link is above. 10 pages are in the text index: search them above, or from the library's search.