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Photograph

Centrifugal Sand Pump at Work at Power Dam

Date: 07 01 1911
Description: A steam-powered centrifugal sand pump at work on the Wisconsin River during the construction of the power dam. Pilings of the coffer dam are visible in the...
Photograph

Driving Pilings for the Coffer Dam at Prairie du Sac Power Dam Site

Date: 07 20 1911
Description: Workmen stand on a barge carrying a steam-powered pile driver. The pilings will form the coffer dam necessary for construction of the power plant on the Wi...
Photograph

Workers on Pile Driver

Date: 09 23 1911
Description: Workers standing on the barge-mounted, steam-driven pile driver at work on the coffer dam.
Photograph

Gravel at Prairie du Sac Power Dam

Date: 10 07 1911
Description: Two men in a boat approaching a wooden gravel bin at the construction site. Other men are watching from atop the structure and from the shore.
Photograph

Foundation Piles and Concrete Forms at East End of Power Dam

Date: 03 03 1912
Description: Two women and a man posing among the timber pilings near the east shore of the river. Wooden concrete forms and two buildings are in the background.
Photograph

Concrete Mixer and East Shore Abutment at Power Dam

Date: 04 13 1912
Description: The concrete mixer standing near the newly poured east shore abutment while men are working nearby. Reinforcing rods protrude from the abutment.
Photograph

Steam Shovel Loading Electric Cars with Gravel

Date: 04 13 1912
Description: Workmen operating a steam shovel loading gravel into electric rail cars during construction of the power dam.
Photograph

Pulling Steel Sheet Piling at Power Dam

Date: 05 03 1912
Description: Workmen on a barge using a pulley to raise sheet steel pilings which were damaged by high water in October, 1911.
Photograph

Northeast View of Interior of Power House Coffer Dam

Date: 09 30 1912
Description: Pile drivers working within the confines of the coffer dam. Men are on the high trestle constructing chutes for pouring concrete.
Photograph

Residential Construction with Teams of Horses

Date: 08 18 1926
Description: Construction workers and early construction machinery being driven by horses in a residential neighborhood.
Photograph

Construction Worker

Date: 1969
Description: Construction worker standing at construction site of the World Trade Center.
Photograph

Truck at Construction Site

Date: 1969
Description: Truck at the construction site of the World Trade Center.
Photograph

Construction Workers and Bulldozer

Date: 1969
Description: Construction workers and bulldozer on the street next to the construction site of the World Trade Center.
Photograph

Construction Workers Digging a Hole

Date: 1969
Description: Three construction workers, two in the hole, and one above, digging at the World Trade Center construction site.
Photograph

Construction Workers and Supplies

Date: 1969
Description: Several construction workers at World Trade Center construction site.
Photograph

Two Men Watching Construction

Date: 1969
Description: View from the back of two men watching the construction of the World Trade Center.
Photograph

Men Observing Construction

Date: 1969
Description: View from the back of men observing the construction of the World Trade Center.
Photograph

Businessmen Watching Construction

Date: 1969
Description: Two businessmen watching the construction of the World Trade Center Tower.
Photograph

Construction Workers on Steel Framework

Date: 1969
Description: Construction workers on the World Trade Center steel framework.
Photograph

Man Looking at Construction

Date: 1969
Description: A man looks at the construction of the World Trade Center.

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