> or a miller who uses windmills to grind their grain,

Huh. For all the "traditional", "organic", "hand crafted", and other "things" I've encountered that isn't one of them. I wonder why no one is advertising fair trade hydropower stone ground organic flour?

Because people generally don't like having bits of millstone in their flour.

At least where I am (the Netherlands) there are plenty of mills still milling.