November 11, 2009, was an ordinary day for two construction workers on a highway near the historic Hoover Dam on the border .

The excursion is along the Colorado River's Black Canyon National Water Trail— crossing the widest single-arch concrete ...

the Hoover Dam spans the Colorado River and the Black Canyon (which separates Nevada and Arizona). The immense concrete structure – which confines Lake Mead, the largest reservoir in the United ...

High Scalers drill into the canyon wall 500 feet above the Colorado River in Black Canyon at the Hoover Dam site. April 1, 1932. Bureau of Reclamation. Even under the best of conditions ...

A 25-year-old woman who was an apparent heiress to the Yellow Pages fortune was shot to death in Arizona not far from Hoover Dam in early 1979 ... the passing decades, Mohave County cold case ...