# Diatoms on the bills indicate a single spring or summer immersion, not years in the river.

> Diatoms on the bills indicate a single spring or summer immersion, not years in the river.

Source: https://mysteriesdept.com/mysteries/db-cooper/evidence/EVD0D6SXNG85597/diatoms-on-the-bills-indicate-a-single-spring-or-summer  
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)

# Diatoms on the bills indicate a single spring or summer immersion, not years in the river.

Diatoms on the bills indicate a single spring or summer immersion, not years in the river.

Supported0

## What it bears on 1 answer

[The bundles washed down a tributary (the Washougal) into the Columbia and were deposited on the bar by the…](https://mysteriesdept.com/mysteries/db-cooper/answers/ANS0D6SXMRT6419/the-bundles-washed-down-a-tributary-the-washougal-into-the)

Disputed

AGAINST

## Cite it

```
Mysteries Department. (2026). Diatoms on the bills indicate a single spring or summer immersion, not years in the river. [Evidence EVD0D6SXNG85597]. https://mysteriesdept.com/r/EVD0D6SXNG85597
```

Key

**EVD** 0D6SXNG85597

Kind

Evidence

Tier

Supported

Version

1

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