Over the next two years, the Combined Policy Committee met only eight times. The first occasion was on the afternoon of 8 September 1943; Stimson discovered that he was the chairman only that morning. This first meeting established a Technical Subcommittee chaired by American Major General Wilhelm D. Styer. The Americans did not want Akers on the Technical Subcommittee due to his ICI background, so Llewellin nominated Chadwick, whom he also wanted to be Head of the British Mission to the Manhattan Project. The other members of the Technical Committee were Richard C. Tolman, who was Groves's scientific advisor, and C. J. Mackenzie, the president of the Canadian National Research Council. It was agreed that the Technical Committee could act without consulting the Combined Policy Committee whenever its decision was unanimous. It held its first meeting at The Pentagon on 10 September 1943.