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06.04.12 (3) | by State Historical Society of North Dakota
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06.04.12 (3)

When construction is completed, the Corridor of History will connect all four large galleries and three hall galleries; since it is such a large and high space, the roof deck and girders at the top have been sprayed with a passive fire retardant mixture.

 

Photo by Brian R. Austin, Graphic Services - SHSND

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Taken on June 14, 2012