137 pages of text and images of the mines served by the Cornish Pumping Engine in Michigan, USA (1880's - 1930's)
http://www.dcl-lib.org/images/files/...imcornpump.pdf

https://www.youtube.com/watch?v=SlGjRVUMam8
http://www.dcl-lib.org/images/files/...imcornpump.pdf

https://www.youtube.com/watch?v=SlGjRVUMam8
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