A few nice contractor images I found:
Army engineers’ progress on facilities in Romania helps international troops better prepare for austere environments
Image by USACE Europe District
Contractors work on a dining facility April 29, 2009, on the “permanent” base camp near Mihail Kogalniceanu Air Base in southeast Romania. The project, being managed by the U.S. Army Corps of Engineers Europe District, will be a host site for the 2009 deployment of the USAREUR-led Joint Task Force-East (JTF-E) initiative. (U.S. Army Corps of Engineers photo by Rachel Goodspeed)
Image from page 319 of “Handbook of construction plant, its cost and efficiency” (1914)
Image by Internet Archive Book Images
Identifier: handbookofconstr00dana
Title: Handbook of construction plant, its cost and efficiency
Year: 1914 (1910s)
Authors: Dana, Richard Turner, 1876-1928
Subjects: Contractors’ operations Building
Publisher: Chicago, The M. C. Clark Publishing Co.
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress
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About This Book: Catalog Entry
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Text Appearing Before Image:
Fig. 123. Tower Drag-Scraper Excavator. stationary, they slide on other cables stretched parallel to theditch and fastened to deadmen, thus giving stability to the tower,while allowing it to move parallel to the ditch; the scraper
Text Appearing After Image:
Fig. 124. Bucket Used with TowerDrag-Scraper Excavator. bucket in which the earth is moved; and cables for operatingthe bucket. The machine is built upon a platform and is movedon rollers by winding a cable fastened at one end to a deadman. * Abstracted from Engineering News. EXCAVATORS 315 A more efficient provision- for moving the machine would doubt-less result in considerably reducing the cost of operation. Theoperation of the machine is illustrated in Pigs. 123 and 124. Itscost is about ,500. With the strengthening of parts necessaryto fit it for extra heavy work the cost would be about ,000, ofwhich ,200 would represent the cost of a hoisting engine. In operating the excavator the bucket is loaded by pulling ittoward the tower by winding up the cable, which, passing overthe lower sheave on the tower, is attached to the front end ofthe bucket. The bucket is then dumped by winding over thedrum the cable which passes over the sheave on top of the towerand which is attached to
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