File:IllinoisTunnelShaft7.jpg

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English: Original Captions: Western: "Fig. 10. Elevator House to lift the excavated clay that it may be dumped into wagons to be hauled away to the Lake Front."; Page's: "Fig 6: ELEVATOR HOUSE Used for lifting the excavated clay so that it may be dumped into waggons to be hauled away to the Lake Front."; Mines: "Fig 9. Elevator house." Additional inscription on the margin of the photo as shown in Western and Mines: "9-15-02 Illinois Telephone & Telegraph Co. Filling Wagons at Shaft No. 7" This image is a composite of all three published versions in order to eliminate printing and scanning artifacts. The table of construction shafts in Western, page 481, shows Shaft 7 at the corner of State Street and Eldridge Court (now 9th Street). The 1906 Sanborn Map of Chicago (sheet 83s) shows the shaft on the south side of Eldridge just east of State.
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 489. 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 251. George W. Jackson, Underground Conduits in Chicago, Page's Magazine, Vol. II, No. 4 (Apr. 1903); page 322.
Author George W. Jackson (died 1922)
Camera location41° 52′ 14.04″ N, 87° 37′ 38.38″ W  Heading=157.5° Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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current04:22, 12 March 2010Thumbnail for version as of 04:22, 12 March 2010749 × 638 (87 KB)Douglas W. Jones (talk | contribs){{Information |Description={{en|1=Original Captions: Western: "Fig. 10. Elevator House to lift the excavated clay that it may be dumped into wagons to be hauled away to the Lake Front."; Page's: "Fig 6: ELEVATOR HOUSE Used for lifting the excavated cla

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