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SCOPA ELETTRICA HOOVER SR71_SB02, Senza sacco, 700 W | MediaWorld.it
Looking upstream at Hoover damsite toward upper cofferdam across excavation for power house location.; Scope and content: Photograph from Volume Two of a series of photo albums documenting the construction of Hoover
Looking upstream through Black Canyon toward Hoover Damsite showing condition after diversion of Colorado River. Lower levels of canyon choked with material blasted and stripped from canyon walls. Downstream rock barrier seen