Combine harvester with dust collection

A combine harvester comprising a main combine body having ground wheels for movement of the combine body across the ground, a feeder housing mounted on the combine body extending forwardly therefrom and defining a duct through which cut crop is fed, the duct having an open mouth at a forward end thereof, a header mounted on the feeder housing for transport thereby across the ground, the header including a header frame extending transversely of the feeder housing, means defining an opening on the header frame at the open mouth of the feeder housing allowing passage of crop material from the header frame rearwardly through the opening into the open mouth of the feeder housing, an auger transport device mounted on the header and rotatable about an axis longitudinal of the frame, the auger transport device carrying helical flight portions arranged to move the crop material cut by the sickle knife inwardly of the header frame to said opening, means for feeding the corp material from the helical flight portions into the feeder housing through the opening, and suction nozzle means located on the header frame immediately in front of the opening and directly above the auger transport device and arranged to draw dust from the area of the opening while allowing the corp material to be fed into the feeder housing through the opening.