Subject: Signatures of Nitroglycerine and Tetryl SectionManagers
Description: Back row: G.B. Seighton, H.G. Holyday, J. Boatman, L. Taylor, C.A. Peck, W. Morris/ Middle row: F. Berry, P.W. Carter, G.R.J. Ward, A. Cordell, J. Gladwell, S.R. Berry, A.E. Avis/ Front row: W. Polley, B.J.Hayyard, L. Hicks, P.G. Knapman, R. McLintock, R.G. Hindhaugh, R.A. Rees.