Committee E24 on Fracture Testing of Metals sponsored the Symposium on Fracture Toughness Testing at Cryogenic Temperatures at the Seventy-third Annual Meeting of the American Society for Testing and Materials, held in Toronto, Ontario, Canada, 21—26 June 1970. The two-session meeting, given on 24 June, was chairmaned by J. G. Kaufman of the Alcoa Research Laboratories, who was assisted by J. F. Boysen of the Boeing Company.