This is a picture of a section of the water wheel that had become detached before the water wheel settled into the creek bank over 200 years ago.
Below are pictures drawn by artist Danny Ricketts. Danny has a gift for being able to draw things to help people understand how they work.
This is a drawing of the 1792 Beavers' Mill based on the excavation.
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to see larger view of how the water wheel works 
Danny Ricketts with a freshly excavated piece of the water wheel. As you can see the sticky clay preserved the wood perfectly. Below is a picture of the artifact after it had been cleaned.