IllinoisTunnelConstruction.jpg

Original file (489 × 690 pixels, file size: 84 KB, MIME type: image/jpeg)

This file is from Wikimedia Commons and may be used by other projects. The description on its file description page there is shown below.

Summary

DescriptionIllinoisTunnelConstruction.jpg	English: Original captions: Mines and Minerals: "Lateral Tunnel Under Construction." Page's: "LATERAL CONDUIT UNDER CONSTRUCTION." Western: "Lateral Conduit Under Construction" and inscribed on the photo, "[Illegible] 9-15-02 Ill. Telephone & Telegraph Co -- Construction Methods --". This image is a composite from 3 published sources in order to eliminate artifacts from both printing and scanning. For scale, note that the track in the tunnel is 14-inch gauge.
Date	first published: 1902-10. Created: 1902-09-15
Source	George W. Jackson, Scope, Extent and Construction of the Underground Conduits of the Illinois Telephone and Telegraph Co. in Chicago, Journal of the Western Society of Engineers, Vol. VII, No. 5 (Oct. 1902); page 485. George W. Jackson, Tunnel Construction in Chicago -- Method of Driving and Constructing So As Not To Disturb the Surface, Mines and Minerals, Vol. XXIII, No. 6 (Jan. 1903); page 249. George W. Jackson, Underground Conduits in Chicago, Page's Magazine, Vol. II, No. 4 (Apr. 1903); page 321.
Author	George W. Jackson (died 1922)

	This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer. You must also include a United States public domain tag to indicate why this work is in the public domain in the United States. Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Honduras has a general copyright term of 75 years, but it does implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II (more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions (more information).
	This file has been identified as being free of known restrictions under copyright law, including all related and neighbouring rights.

PDMCreative Commons Public Domain Mark 1.0falsefalse

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Thumbnail	Dimensions	User	Comment
current	02:41, 5 March 2010		489 × 690 (84 KB)	wikimediacommons>Douglas W. Jones	{{Information \|Description={{en\|1=Original captions: Mines and Minerals: "Lateral Tunnel Under Construction." Page's: "LATERAL CONDUIT UNDER CONSTRUCTION." Western: "Lateral Conduit Under Construction" and inscribed on the photo, "[Illegible] 9-15-02 I

There are no pages that use this file.

This file contains additional information, probably added from the digital camera or scanner used to create or digitise it.

If the file has been modified from its original state, some details may not fully reflect the modified file.

_error	0