File:Victoria mine Taylor trompe heads condition in 1949 2.png
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Summary
[edit]DescriptionVictoria mine Taylor trompe heads condition in 1949 2.png |
Français : Etat des prises d'air en 1949, Victoria Mining Co., montrant les beux pièces en fonte moulée encore en place. La circulaire et la jupe ont été retirées plusieurs années auparavant, et la tête de la trompe était manipulée à la main, à l'aide de cordes et de poulies.
English: Condition of intake heads in 1949, Victoria Mining Co., showing two cast-iron pieces still in place. Bustle pipe fitting and skirt were removed years ago and headpiece was operated by hand by means of running thread ans capstan nut. |
Date | |
Source | Hydraulic air compressors, published by the United States Department of the Interior |
Author | Leroy E. Schulze |
Licensing
[edit]Public domainPublic domainfalsefalse |
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
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Horizontal resolution | 47.24 dpc |
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Vertical resolution | 47.24 dpc |
File change date and time | 17:38, 23 June 2018 |