Inside the mill I was pleased to see that it wasn't busy and immediately a young lad approached me and asked if I'd like a tour.
A video of the waterwheel working is here. I was standing right next to the waterwheel when the water was allowed in and it started turning. I had to move fast to avoid a soaking! My young guide was very informative, showing me all 4 levels of the mill, one of which is rented out for functions, including wedding receptions. He explained a lot of the machinery that was standing around the mill, a tool for shucking corn and another for sharpening knives, another for turning the flour on the floor so it would cool as it was hot after being between 2 grindstones. When my tour was finished I wandered around looking more closely at artifacts placed on tables, window ledges and the floor.
Today the mill is operated by volunteer millers who maintain the machinery and grind the corn and wheat on Saturdays from May through November. The flour is for sale, with no preservatives added, so I bought some buck wheat, great for pancakes, and some cornflour so I can make cornbread. They told me to keep it in the freezer where it will keep indefinitely.
I was feeling hungry and strolled over to the Locke Store, where a hoard of folks were lining up buying lunch, local produce and local wines.