Ancient Hand operated millstone or Rock Flour Mill.wmvFeb 7, 2013 . In India, grinding stones (Chakki) were used to grind grains and spices. These consist of a stationary stone cylinder upon which a smaller stone cylinder rotates. Smaller ones, for use, were operated by two people. Larger ones, for community or commercial use, used livestock to rotate the upper.المطاحن الحجرية,Stone Mill Sales & Service - Video 3Dec 27, 2011 . The master millwright's of Stone Mill Sales and Service of North Wilkesboro, NC have over 15 years of experience in on-site, in-house, or in-bakery stone mil.