Search for all of "Tunnels", all of "Construction Workers", all of "Concrete"

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View of the concrete lining in the diversion tunnels Construction workers are pouring concrete to line the diversion tunnels. Lights illuminate the project. Huge buckets hang from a crane.
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Side-wall jumbo inside diversion tunnel View of the interior of a diversion tunnel showing the side-wall jumbo used for placing of the concrete tunnel lining. The tunnel and jumbo are illuminated by electric lights. A construction worker stands in the foreground. A truck...
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First 40 foot slab of concrete poured in lining diversion tunnels This is a view of the interior of a diversion tunnel when the first 40 foot concrete slab was poured to line the tunnel during construction of Hoover Dam. Lights illuminate the scene and a construction worker can be...
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Concrete lining inside diversion tunnel no. 2 View of the interior of diversion tunnel no. 2, showing the completed invert and side wall sections of concrete lining. The tunnel is illuminated by electric lights. On the tunnel floor, construction workers stand by a truck which is...
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Construction of the Arizona power house Shows the reinforcing framework for the Arizona power house and the locations for the turbine rooms, front room galleries, and penstocks. Some buildings, trucks, tunnel openings, and construction workers are visible.
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Diversion tunnel no. 2, showing the pumpcrete line to the upstream plug Shows the concrete pipe line from the pumpcrete gun to the upstream plug in diversion tunnel no. 2. Some construction workers are visible.
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Construction of Hoover Dam diversion tunnel View looking upstream through diversion tunnel no. 2 at intersection with inclined tunnel from upstream Nevada intake tower (inscription on back of photo). Shows concrete pouring forms and one construction worker standing looking up the tunnel at bottom...
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Construction workers inside Hoover Dam diversion tunnel Shows a power shovel dumping concrete into a dump truck inside a diversion tunnel during the construction of Hoover Dam. Construction workers are visible at work.
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View showing method of finishing slabs in invert lining. Construction workers are operating machinery to finish slabs in the invert lining of a diversion tunnel at the Hoover Dam site.

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