The speedy replacement of the John Day Lock and Dam gate along the Columbia River was critical for the transport of materials in and out of the country. The river - which deﬁ nes a majority of the border between Washington and Oregon - serves as the top U.S. export gateway for wheat, barley, wood, mineral bulk and auto imports, valued at $2 billion annually. Photo courtesy of Advanced American Construction Inc.
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Table of Contents for the Digital Edition of Constructor -July/August 2012