# SEM-EDS found unalloyed titanium, 400-series stainless steel smeared into titanium, spiral aluminium…

> SEM-EDS found unalloyed titanium, 400-series stainless steel smeared into titanium, spiral aluminium machining chips and bismuth, with most particles…

Source: https://mysteriesdept.com/mysteries/db-cooper/evidence/EVD0D6SXR661R2R/sem-eds-found-unalloyed-titanium-400-series-stainless-steel  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Hijacking of Northwest 305 (D. B. Cooper)](https://mysteriesdept.com/mysteries/db-cooper)Evidence

Evidence · Hijacking of Northwest 305 (D. B. Cooper)

# SEM-EDS found unalloyed titanium, 400-series stainless steel smeared into titanium, spiral aluminium…

SEM-EDS found unalloyed titanium, 400-series stainless steel smeared into titanium, spiral aluminium machining chips and bismuth, with most particles matching book-match residue.

Supported0

## What it bears on 1 answer

[The tie was the hijacker's and its particles record his workplace, a metal fabrication or titanium plant, and…](https://mysteriesdept.com/mysteries/db-cooper/answers/ANS0D6SXQYC2QMN/the-tie-was-the-hijackers-and-its-particles-record-his)

Most likely

FOR

## Cite it

```
Mysteries Department. (2026). SEM-EDS found unalloyed titanium, 400-series stainless steel smeared into titanium, spiral aluminium… [Evidence EVD0D6SXR661R2R]. https://mysteriesdept.com/r/EVD0D6SXR661R2R
```

Key

**EVD** 0D6SXR661R2R

Kind

Evidence

Tier

Supported

Version

1

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