Millstone (IMAGE) Cleveland Museum of Natural History Caption This is a millstone made of French buhr at the site of Clover Hill Mill, Trumbull County, Ohio. Credit Copyright SEPM Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.