File:Transactions (1871) (14578247639).jpg

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Identifier: transactionsmining41amer (find matches)
Title: Transactions
Year: 1871 (1870s)
Authors: American Institute of Mining, Metallurgical, and Petroleum Engineers
Subjects: Mineral industries
Publisher: New York (etc.)
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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20 VENTILATING-SYSTEM AT THE COMSTOCK MINES, NEVADA.
Text Appearing After Image:
VENTILATING-SYSTEM AT THE COMSTOCK MINES, NEVADA. 21 ually joins the air in the hot winze of the north lateral.The fan takes 3,791 cu. ft. per minute. The air on the 2,350-ft. level passes through the main drift,while the air from the fan on the 2,250-ft. level passes into across-cut and a drift east of the main drift, returns, and joinsthe air passing through the main drift towards the Ophir winze.The high temperatures, noted previously, were taken in thisdrift before the connection was made. The average tempera-ture before-connection was 125.4°, and some months later thetemperature measured 100.1°. The lowering in temperaturewas due to the increased volume of air and to the boarding-up(snow-shedding) of the sides and top of the drift, which veryeffectually shut oft hot water, steam, and much of the heatradiated from the rock-surfaces. The 2,450-ft. level is ventilated by a Iso. 8 cast-iron Ameri-can blower. The air is taken through an inlet-pipe extendingtowards the south compartm

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Author American Institute of Mining, Metallurgical, and Petroleum Engineers
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28 July 2014
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This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/14578247639. It was reviewed on 9 October 2015 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions.

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current12:00, 29 July 2021Thumbnail for version as of 12:00, 29 July 20212,928 × 1,580 (294 KB)SteinsplitterBot (talk | contribs)Bot: Image rotated by 90°
13:48, 9 October 2015Thumbnail for version as of 13:48, 9 October 20151,580 × 2,934 (297 KB)Fæ (talk | contribs)== {{int:filedesc}} == {{information |description={{en|1=<br> '''Identifier''': transactionsmining41amer ([https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&fulltext=Search&search=insource%3A%2Ftransactionsmining41amer%2F...

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