Cil-cewydd Corn Mill

Built of brick laid in English bond, with hammer pitched and margin dressed locally obtained siltstone dressings. Flat roof (formerly pitched), behind a brick parapet. The building is of five storeys, comprising the earlier N-S block of 6 bays, and the later lower rear wing, also of 6 window bays with slate roofs. The main door is in the E bay of the main block; a round-headed opening with stepped and coursed hammer dressed voussoirs. The windows throughout are segmentally headed, with rock faced stepped heads, and contain 15-pane iron lights, the centre 4 pivot hung. The gable ends have loading doors on each floor, some openings later widened, and a steel hoist arm at high level. Above the 5th floor, a heavy dentilled cornice with a hammer dressed frieze, above which rises a brick parapet. This parapet has been raised at the SE end by 2m to conceal enclosed roof tanks. The added rear block, set alongside the railway line and a dry watercourse, consists of two parallel roofs forming twin gables at the N end. The re-entrant angle between the two ranges is now built up with various lightweight cover buildings.

Externally, the original circular iron wagon turntable survives close to the E side of the main block.

Ground floor of concrete with access traps to the two late C19 MacAdam turbines below, the floors connected by a fireproof spiral stair. These are the only original mill fittings to survive, the horizontally set turbines are said to have bearings floated in mercury. The turbines, made in Belfast may be the only surviving examples of the 'improved' Macadam type. The rear added block has cast iron reinforced roof trusses, and heavy central stanchions.