File:"Excavating for 'block 40' showing the heavy timber trusses, or struts. Over 4 million board feet of lumber is used... - NARA - 294054.tif
added Category:Falsework using HotCat
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Revision as of 02:49, 25 March 2013
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[[Category:Construction of the Grand Coulee Dam]]
[[Category:Construction of the Grand Coulee Dam]]
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[[Category:Falsework]]