Mining_and_Scientific_Press_-_1885-07-18_-_Frue_and_Triump_ore_concentrators.jpg

Description
English: Adjacent advertisements for two competing ore concentrators of the late 19th century, the Frue Vanner and the Triumph Ore Concentrator.
Date
Source

This image or file is extracted from a scan of the Mining and Scientific Press ,
published by Dewey & Co., San Francisco, California, USA.
The original image is on page 59 of the issue dated July 18, 1885, available at the Internet Archive
This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing for more information.

Author Unknown engravers; "copy" (text) likely by the two companies
Permission
( Reusing this file )
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-1923 Public domain in the United States //commons.wikimedia.org/wiki/File:Mining_and_Scientific_Press_-_1885-07-18_-_Frue_and_Triump_ore_concentrators.jpg