The catalogue reports that McDonnell Douglas personnel analysed alleged Aurora fragments and concluded they were primarily aluminium with calcium and possible trace elements, potentially originating from post-1908 common aluminium alloys.
“Conclusion: 83% aluminium; 16% Ca; zinc with possible traces of manganese and copper. Could have originated with post 1908 common aluminium alloys.”
Source: Preliminary Catalogue Of Analysis of Alleged "Fragments" Reportedly Associated With Sightings Of Unidentified Aerial Phenomena
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