File:YogoSapphireExtraction.jpg

No higher resolution available.

YogoSapphireExtraction.jpg (550 × 270 pixels, file size: 37 KB, MIME type: image/jpeg)

This is a file from the Wikimedia Commons. Information from its description page there is shown below.
Commons is a freely licensed media file repository. You can help.

Description

Extracting sapphires at the English Mine was similar to placer gold recovery. In this photograph, miners clean a sluice box. The fence-like contraption behind the men, or "metal riffles," has been removed from the bottom of the sluice boxes. The riffles act as a trap to capture the heavy sapphires during the "washing" process. At Yogo mines, Yogo Gulch, Montana, USA

Date

between 1895 and 1922

Source

Big Sky Journal

Author

Unknown author

Permission
(Reusing this file)

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.

Note: Original Yogo mines were destroyed by floods in 1923

File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Thumbnail	Dimensions	User	Comment
current	00:18, 25 October 2011		550 × 270 (37 KB)	PumpkinSky	{{Information \|Description= Extracting sapphires at the English Mine was similar to placer gold recovery. In this photograph, miners clean a sluice box. The fence-like contraption behind the men, or "metal riffles," has been removed from the bottom of the

File usage

No pages on the English Wikipedia use this file (pages on other projects are not listed).