ERSEL Ağır Makine San ve Tic A Ş ERSEL Ağır Makine San ve Tic A Ş Toggle navigation Semi autogenous SAG grinding is a grinding process carried out with small amount of ball charge 4 15% unlike ball mills and with the help of bigger parts crumbling the smaller parts of ore To achieve this type of grinding SAG mills with large diameter and short length have been