Extec Concrete Crusher - The Whole OperationMar 15, 2011 . I bought some editing software and combined some different video together into one. This video shows the whole process of crushing the.concrete crusher extec,The Extec C-12 - Setanta MachineryWelcome to Extec Screens & Crushers - a member of the group. Features and . Aiding in the processing of concrete, an over band magnet ensures the.