sponsored by ASTM Committee C-16 on Thermal and Cryogenic Insulating Materials, American Society for Testing and Materials, Philadelphia, Pa., 19-20 Sept. 1977 ; R. P. Tye, editor. sponsored by ASTM Committee G-2 on Erosion and Wear, American Society for Testing and Materials, Vail, Colo., 24-26 Oct. 1977 ; W. F. Adler, editor. sponsored by ASTM Committee D-9 on Electrical Insulating Materials, American Society for Testing and Materials ; R. Bartnikas, E. J. McMahon, editors. sponsored by ASTM Committee E-24 on Fracture Testing, American Society for Testing and Materials, San Diego, Calif., 13-14 Oct. 1977. ; J. B. Chang, editor. sponsored by ASTM Committee B-10 on Reactive and Refractory Metals and Alloys, American Society for Testing and Materials, New Orleans, La., 15-17 Oct. 1979 ; E.W Kleefisch, editor. sponsored by ASTM Committee E-35 on Pesticides, American Society for Testing and Materials, New Orleans, La., 17 Oct. 1978 ; E. E. Kenaga, editor. sponsored by ASTM Committee D-4 on Road and Paving Materials, American Society for Testing and Materials, Bal Harbour, Fla., 6 Dec. 1978 ; G. J. Allen, symposium chairman. sponsored by ASTM Committee D18 on Soil and Rock for Engineering Purposes, American Society for Testing and Materials, Boston, Mass., 28 June 1978 ; Raymond Lundgren, editor. a symposium sponsored by ASTM Committee E-24 on Fracture Testing of Metals, American Society for Testing and Materials, Philadelphia, Pa., 23-25 Aug., 1976 ; J. M. Barsom, symposium chairman. sponsored by ASTM Committee D-18 on Soil and Rock for Engineering Purposes, American Society for Testing and Materials, Detroit, Mich., 24 June 1981 ; V.P. Drnevich, R.E. Gray, editors.