# Palmer's 1980 reading of the beach put the money above the 1974 dredge sand, which the washdown theory used…

> Palmer's 1980 reading of the beach put the money above the 1974 dredge sand, which the washdown theory used to allow years of transport.

Source: https://mysteriesdept.com/mysteries/db-cooper/evidence/EVD0D6SXN0M6Z33/palmers-1980-reading-of-the-beach-put-the-money-above-the  
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)

# Palmer's 1980 reading of the beach put the money above the 1974 dredge sand, which the washdown theory used…

Palmer's 1980 reading of the beach put the money above the 1974 dredge sand, which the washdown theory used to allow years of transport.

Suggestive0

## 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

FOR

## Cite it

```
Mysteries Department. (2026). Palmer's 1980 reading of the beach put the money above the 1974 dredge sand, which the washdown theory used… [Evidence EVD0D6SXN0M6Z33]. https://mysteriesdept.com/r/EVD0D6SXN0M6Z33
```

Key

**EVD** 0D6SXN0M6Z33

Kind

Evidence

Tier

Suggestive

Version

1

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