File:River mill dam governor test.png

Original file(6,292 × 4,807 pixels, file size: 28.01 MB, MIME type: image/png)

Summary

Description
English: River mill hydroelectric project. glass plate negative
Date
Source Portland General Electric.
Author Portland General Electric.

Licensing

Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:River_mill_dam_governor_test.png

Captions

Governor in RIver Mill dam.

Items portrayed in this file

depicts

19 August 1911Gregorian

File history

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Date/TimeThumbnailDimensionsUserComment
current15:46, 19 August 2019Thumbnail for version as of 15:46, 19 August 20196,292 × 4,807 (28.01 MB)TadfaftyUser created page with UploadWizard
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