Comalco alumina plant; HALS of bauxite stockpile, ZOOM OUT to HAMLS of bauxite being mixed with caustic soda solution in large tank (0:23). CSs of mixture swirling in tank (1:11). MLS of large cylinders (dryers) rotating, ZOOM OUT to HAMLS of maze of pipes and towers (0:03). CU of foamy mixture in tank (0:16). MSs of hopper rail-cars loaded with coal, unloading coal at ramp (0:40). CU of man's hand showing bauxite bits to camera, CU of him showing alumina powder (0:28). ESTABLISHING PAN of plant (0:22).