organised by the Yorkshire Branch and Fluid Separation Processes Group of the Institution of Chemical Engineers. organised by the Computing and Control Division of the Institution of Eletrical Engineers. organised by the Sheffield and District Centre (Yorkshire Branch) of the Institution of Chemical Engineers. organised by the Power and Management and Design Divisions of the Institution of Electrical Engineers. organised by the Power and Management and Design Divisions of the Institution of Electrical Engineer organized by the Maritime Engineering Board of the Institution of Civil Engineers. organised by the Yorkshire Branch of the Institution of Chemical Engineers in co-operation with the Institution of Civil Engineers. organised by the Electronics Division of the Institution of Electrical Engineers. organised by the Power Division of the Institution of Electrical Engineers. organised by the Power, the control and Automation and the Electronic Division of the Institution of Electrical Engineers.