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Photograph

15-30 Tractor Pulling an Austin Mammoth Reversible Road Grader

Date: 1916
Description: An International Harvester Mogul(?) 15-30 tractor pulling an Austin mammoth reversible road grader.
Photograph

Soldiers Operating Crawler Tractor

Date: 1958
Description: Sergeant Dennis McGhee and a student in an International crawler tractor (TracTracTor) built for the U.S. Army. The student is learning how to operate the ...
Photograph

Soldier Using International TD-18 Crawler Tractor

Date: 1958
Description: Soldier using an International TD-18 crawler tractor (TracTracTor) during a training exercise. The original caption reads: "A graduate of the school assign...
Photograph

Construction Worker Buddis Stone

Date: 1958
Description: Construction worker Buddis Stone at the site of the Mammoth Pool Dam along the San Joaquin River in the Sierra Nevada Mountains. Stone bored holes for expl...
Photograph

Machinery at Prairie du Sac Dam

Date: 08 11 1910
Description: The first machinery at work sounding at the site for the power dam. Workmen are posing near the carriage-mounted equipment. A horse-drawn wagon is in the ...
Photograph

Erecting Pile Driver for Railroad Extension to Dam Site

Date: 1911
Description: Workers erecting a steam driven pile driver while others survey for the railroad extension from the village of Prairie du Sac to the dam site on the Wiscon...
Photograph

Main Office at Prairie du Sac Dam Site

Date: 03 1911
Description: Construction workers posing during construction of the main office at the Wisconsin River dam site.
Photograph

Hoisting Machine Loading Pilings on Barge at Prairie du Sac Dam Site

Date: 03 1911
Description: Workers use a rail car mounted crane to load pilings onto a barge. Bluffs are in the distance.
Photograph

Pile Driver at Work on Railroad Extension from Prairie du Sac to Dam Site

Date: 04 1911
Description: Workmen pose on a steam-powered pile driver at work at the north end of the slough on the Wisconsin River. The railroad was extended from the village to th...
Photograph

First Concrete Laid at Power Dam

Date: 04 14 1911
Description: Newly poured concrete abutment on the east shore of the Wisconsin River. Iron reinforcing rods protrude from the concrete. Workmen and the steam-driven cem...
Photograph

Narrow Gauge Trestle and Pile Drivers at Prairie du Sac Dam Site

Date: 06 19 1911
Description: Looking west over the Wisconsin River at the unfinished narrow gauge railroad trestle built for construction of the dam. Two pile drivers are seen in the a...
Photograph

Narrow Gauge Trestle and Coffer Dam Under Construction

Date: 06 21 1911
Description: Looking east over the Wisconsin River showing the unfinished narrow gauge railroad trestle. Two steam-driven pile drivers on barges with construction worke...
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

Power Dam Construction Site

Date: 07 27 1911
Description: Elevated view of the power dam construction site on the Wisconsin River from the west shore. The outline of the coffer dam is easily seen. Three steam-pow...
Photograph

Railroad Trestle at Dam Construction

Date: 08 15 1911
Description: Dam site on the Wisconsin river, looking southwest along the unfinished narrow gauge railroad trestle. The coffer dam and two pile drivers are also visible...
Photograph

Beginning of High Water at Power Dam

Date: 10 07 1911
Description: Elevated view of the rising waters of the Wisconsin River at the construction site. This view shows the coffer dam, pile drivers, and narrow gauge railroad...
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.

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