File:1904BunkerHillMine Richmond(1) Stemwinder(6) Tunnels.png

Original file (632 × 894 pixels, file size: 782 KB, MIME type: image/png)

Summary

Description
English: 1904 Bunker Hill Mine with the Richmond(1) and Stemwinder(6) Tunnels
Date
Source The geology and ore deposits of the Coeur d'Alene district, Idaho, USGS Professional Paper 62, https://pubs.er.usgs.gov/publication/pp62
Author U.S. Dept. of the Interior, USGS, F. L. Ransome and Frank Cathcart Calkins

Licensing

Public domain
This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.

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copyright status

public domain

applies to jurisdiction: United States
determination method or standard: work of the federal government of the United States

media type

image/png

checksum

1a8e3ef62540913697c0a8824e21934d4fe2b27d

determination method or standard: SHA-1

data size

800,434 byte

height

894 pixel

width

632 pixel

inception

1 January 1908Gregorian

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Date/TimeThumbnailDimensionsUserComment
current17:10, 21 November 2018Thumbnail for version as of 17:10, 21 November 2018632 × 894 (782 KB)Pi3.124User created page with UploadWizard

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allikas: https://en.wikipedia.org/wiki/File:1904BunkerHillMine_Richmond(1)_Stemwinder(6)_Tunnels.png