The meal collects in
the wooden vat which surrounds the stones and falls through a small hole in
the floor down a meal spout to the ground floor
The miller then collects the meal in a sack and sends it up to the top of the mill again on the sack hoist so that it can be poured down another chute into the boulting machines which sieve the bran out of the meal, leaving the flour to fall into the flour bin. From a full sack of corn, about 80% would be turned into flour and 20% into bran.