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Structures and ruins on this page are on Kamargo Island/Poor's Island in the village of Black River. Likely owned and operated by the Jefferson Paper Mill and Black River Pulp Company during the late 1800's to early 1900's.


For info on the trail (and a few pics of the trail) on Poor's Island/Kamargo Island click here.


Refer to this map for the locations of the photos below on the island.







Poor's Island Papermill ruins
Taken on 05/22/07
Rollers used to crush grind the wood in the papermill
There are a number of ruins and pieces of the papermills and pulp processing on this island and along the trail created and maintained by the Brookfield Power Company. This roller and a few others are across the trail from the mill/picnic area (between location B and D on the map).
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Comments from visitors:
Jack S writes: "That is a grind stone the wood was ground not crushed. There were pockets around the stone where wood was hydraulically pushed against the turning stone."

Poor's Island Papermill ruins
Jack S writes "This is a carthage grinder. It was used to grind pulpwood into wood pulp in a papermill. The 'rollers' that you see in the abandoned paper mill pictures were inside this castiron machine. Wood was loaded in the pockets as seen on the left, the door was closed and the lever pulled to actuate the hydraulic cylinder which forced the wood against the grind stone. Water was sprayed against the stone to keep the wood from burning. Wood and water mixed, came out the bottom and was called slush, this went through a series of screens to remove slivers, then to the beaters to make the fibers finer, then onto the paper machine. If only wood fiber was used it was a solid wood sheet; an example of that would be the old fashioned milk bottle caps. For other sheets it was mixed with other fibers, chemicals, dies, and waste paper."



04/23/2022
More foundations, near fishing area across from picnic area. Location D on the map.
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04/23/2022
Old foundations near trail entrance. Location C on the map.
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Jefferson County Mill Jefferson County Mill Jefferson County Mill
Jefferson County Mill Jefferson County Mill Jefferson County Mill
Jefferson County Mill Jefferson County Mill Jefferson County Mill
04/23/2022
A mixture of camera shots from across the bridge and drone photos of the mill ruins near the Black River Bridge at the head of the island. Location A on the map.
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Jefferson County Mill
This is likely a photo of the original mill or some version of it. 1910-1920.