In the 1942 "Quebec Agreement", the United Kingdom and the United States agreed to develop the "Tube Alloys" Project and created a committee to manage the project which included C. D. Howe, the Canadian Minister of Munitions and Supply. This was the code name for the British Uranium Committee project which had worked on a theoretical design for an atomic bomb. One significant contribution was a calculation of the critical mass of uranium. The mass was less than earlier estimates and suggested that development of a fission bomb was practical.