This drawing was done in the aftermath of October 5, 1869, Eastman Tunnel collapse. A tunnel connecting Nicollet and Hennepin islands collapsed on that day causing the need for considerable repair to be done to Hennepin Island and St. Anthony Falls. The repair work was finished in 1884, creating a protective apron over the falls.
Contributing Institution:
Hennepin County Library, James K. Hosmer Special Collections Library
This drawing shows the a cross section of a canal used to feed water through turbines to generate power. The tunnel was embedded in the limestone near St. Anthony Falls with a base of concrete and shell of masonry. See also umn191811.
Contributing Institution:
Hennepin County Library, James K. Hosmer Special Collections Library
This drawing shows the condition of Minneapolis Mill Company's dam and mill pond in regards to the build-up of silt and debris from the previous winter near St. Anthony Falls.
Contributing Institution:
Hennepin County Library, James K. Hosmer Special Collections Library
Upper view of Rapidan Dam at Rapidan, Minnesota, on the Blue Earth River. Note to Miss Louisa Bartels of Chicago, Illinois; postmarked Good Thunder, Minnesota
Finishing work of putting on the top blank of flashboards at the upper dam. The Mississippi River is full of ice and slush, which hampered the work. The Great Northern Depot is visible in the background.
Rapidan Mill site, Consumer's Power Company. Note reads: "Two of these buildings moved to Rapids and became the Dam Site store and the building next to the store."
Rapidan Dam on Blue Earth River near Rapidan, Minnesota shortly after completion. Note says, "Rapidan Dam 60 feet of water above the dam This power runs street cars at Mankato and lights the city also lights Madelia and son will light all the villages near Mankato This view after the dam was completed""
Rapidan Dam near Mankato, Minnesota, Height, 66 feet, Cost $500,000; Consumers Power Co., owners; with message from Jennie R. T. to Mrs. I. Jenkins, Janesville, Minnesota
The dam, mill and cooper shop are located at the joining of the South Middle Branch and the North Middle Branch of the Zumbro River. This was the second mill, built after the first mill was destroyed by a fire in 1879. The mill was built by A. D. Allis.
Area of the lower dam water power station, shows the intake area and headrace; the Minneapolis Western railroad bridge is in the background; also includes the gasworks.
Lower dam water power station shows the roof of the turbine chamber and headrace; the Minneapolis Western railroad bridge and gasworks are in the background.