Deal On The Nile. The Gezira Cotton Scheme -- Large scale ploughing of more difficult soil is done by big ***** ploughs Engines stationed either end of huge fields draw plough back ***** and forwards on cables between them. This method is found more economical ***** efficient than use of tractors. Machines are from pool maintained by cotton company. British Government in Africa has long had its own 'Tennessee Valley' scheme - Gezira Cotton Scheme in the valley area of nearly a million acres between the ***** and white Niles. Plans for the area's development were begun before tee last ***** and 1925 the Sennar Dam, two miles long and over a hundred feet high at ***** point was completed. September 6, 1951. (Photo by British Official Photograph).