Abstract: A separator (13) to remove particles from a gas stream, the separator (13) includes a casing (11) divided into three zones (A,B,C) by two divider plates (9,10). A plurality of uniflow cyclone separators (12) are supported by the divider plates (9,10) and provide communication between the first zone (A) and the other two zones (B,C). Particle carrying gas enters the first zone (A) through an inlet (18) and as major cleaned streams discharge from the cyclone separators (12) into the third zone (C) and as minor particle carrying streams discharge into the second zone (B) to be discharged from the casing 11.