Buhrstones: Grain Grinders of Pioneer Mills (HI-02)
The buhrs ranged from 2.5 to 7 feet in diameter and from about 4 to 12 inches in thickness. Placed one above the other, the lower (netherstone) was stationary; the upper (capstone) was balanced above and revolved over the netherstone. Roughened and grooved opposing surfaces ground the grain. Periodically, these surfaces were sharpened by skilled artisans, who used tempered steel picks.
After more efficient steel-roller grinders were adopted in the 1870's, the colorful era of buhrstone water mills quickly came to a close.
Our Hoosier State Beneath Us: Historical