... , nonferrous metal, coal etc, and also hydro-power station, railroad, highway engineering, etc. The jumbo is designed with two drilling ... on face, slope, roof, side wall and floor in underground mine or tunnels, and it also can drill anchor holes ... rotation±180°Feeder compensation1500mmFeeder tiltingDownward105°; Upward15°Swing feederLeft45°; Right45° Underground Coal Mining Equipment for Sale