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File:Mining with steam points.jpg

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Description
English: Steam points in place underground in a drift mine in permafrost. The steam thaws the frozen gravel, permitting it to be dug out and washed to recover the gold.
Date copyright 1909 photo 1908
Source Through the Yukon and Alaska [1] Mining and Scientific Press, San Francisco, 1909 p213.
Author T.A. Rickard photographer probably Rickard
Permission
(Reusing this file)
Public domain
This Canadian work is in the public domain in Canada because its copyright has expired due to one of the following:
1. it was subject to Crown copyright and was first published more than 50 years ago, or

it was not subject to Crown copyright, and

2. it is a photograph that was created prior to January 1, 1949, or
3. the creator died prior to January 1, 1972.

You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.

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Public domain
Public domain
This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.

United States
United States
This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

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current19:52, 3 December 2010Thumbnail for version as of 19:52, 3 December 20102,373 × 1,552 (776 KB)Dankarl{{Information |Description={{en|1=Steam points in place underground in a drift mine in permafrost. The steam thaws the frozen gravel, permitting it to be dug out and washed to recover the gold.}} |Source=''Through the Yukon and Alaska'' [http://www.archi

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