Nice stuff on 2 Dutch snuff mills. The image is of a millstone used for milling spices, at De Ster snuff and spice mill in Rotterdam.
1. A detailed description with many excellent photos of the De Lelie and De Ster snuff and spice mills. The mills, both dating from the late 1700s, sit on the waterfront of the Kralingse Bos, a man-made lake on the eastern edge of Rotterdam. http://www.wired.com/underwire/2009/06/gallery_snuff/
2. Much more detail and history of the mills and of snuff making: http://www.northerner.com/articles/SwedishSnus-292/The%20Windmill%20snuff%20from%20Kralingen-7480/SHOP-0/