and Bliss Industries ...50 HP Schutz O Neil Hammer Mill 12982. Manufacturer: Schutz O Neil. Used Schutz O'Neil air swept Carbon Steel Hammer Mill with 50 HP 230/460 volt drive. Unit includes integral disc classifer. Mill has 16" diameter grinding chamber with integral exhaust fan.The Hammer Mill is used either as a one-step primary crusher for reducing run-of-quarry material to as small as