File:Frue Vanner diagrams.png
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Summary
| Description |
English: Diagrams of end, side and overhead views of a Frue Vanner, a machine invented in 1874 and used in the concentration of metalliferous ores. |
| Date | |
| Source | A Textbook of Ore Dressing, published by Hill Publishing Company, New York. |
| Author | Robert H. Richards |
Licensing
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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.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:16, 30 April 2009 | | 835 × 1,037 (162 KB) | Smalljim | {{Information |Description={{en|1=Diagrams of end, side and overhead views of a Frue Vanner, a machine invented in 1874 and used in the concentration of metalliferous ores.}} |Source=A Textbook of Ore Dressing, published by Hill Publishi |
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