T. Roles

Discussion on "The present position of electricity supply in the United Kingdom and the steps to be taken to improve and strengthen it" before the Institution, 13 April, 1916

C. H. Wordingham, J. S. Highfield, W. L. Madgen, .

Discussion on Mr. Parr's paper, "Secondary cells: their deterioration and the causes" before the Leeds Local Section

W. B. Woodhouse, T. H. Churton, T. Roles, .

Discussion on "The power supply of the central mining-rand mines group"

John Shepherd, Walter Lang, W. E. Burnand, 1915 .

Discussion on 'Automatic protective switchgear for alternating-current systems'

H. W. Clothier, W. E. Burnand, H. S. Ripley, 1915 .

Discussion on "Hire and maintenance of continuous-current motors"

Walter Lang, W. E. Burnand, Dave Robertson, 1916 .