This structure in Chase Park off Grist Mill Dr. in Chatham, Mass. still grinds maize into cornmeal on summer days. Built in 1797, the mill is fragile and can only grind corn at certain wind velocities. Wind speed must be at least 20 mph in order to create proper kinetic energy. However, damage can occur if gusts exceed 25 mph. This is a photo I took and then processed with paint shop pro using the colored pencils tool! I think the "X" is simplistic but is what adds all the beauty to the image........