... used to drill blastholes for tunneling construction in mines of metallurgical, nonferrous metal, coal etc, and also hydro-power station, railroad, ... on face, slope, roof, side wall and floor in underground mine or tunnels, and it also can drill anchor ... rotation±180°Feeder compensation1500mmFeeder tiltingDownward105°; Upward15°Swing feederLeft45°; Right45° Underground Coal Mining Equipment for Sale