sponsored by the Metal Powder Industries Federation and the American Powder Metallurgy Institute. sponsored by the Metal Powder Industries Federation and the American Powder Metallurgy Institute ; editors, Edward N. Aqua, Charles I. Whitman. sponsored by the Metal Power Industries Federation and the American power Metallurgy Institute ; editors Henry H. Hausner, Pierrre V. Taubenblat. sponored by the Metal Powder Industries Federation and the Picatinny Arsenal, American Defense Preparedness Association. sponsored by the Metal Power Industries Federation and the American power Metallurgy Institute ; editors Henry H. Hausner, Harry W. Antes, Gaylord D. Smith. sponsored by the Institute of Metals and the Iron and Steel Institute.