Post-medieval mills and milling, 1540-1750 – The Mills …
Cross section Heron Corn Mill, Cumbria showing the millstones, driven through spur gearing, and the adjoining kiln for drying oats (JKMC-DRW-33-W1-009) ... Millstones continued to be imported from France and Germany, as they had been in the medieval period, French burrs and lava stones, known as blues, blacks or Cullins (from …