Abstract: An improved mining machine including apparatus for cleaning particle-laden gas, of the type which includes a duct in which liquid droplets are introduced into particle-laden gas flowing through the duct, a demister in the duct for removing liquid and particles from gas which moves through the duct. The improvement includes at least one curved flow path in the demister for causing the gas to change direction and a liquid collection surface defining the bottom of the demister. Collected liquid is removed from the liquid collection surface. A liquid collection barrier with an aerodynamically curved upper surface is located downstream from the curved flow path and defines the downstream end of the liquid collection surface, the barrier extending the width of the flow path.