Among the wealth of information that the Tizard Mission, a scientific mission sent to the United States to promote the exchange of military science and technology, brought to America were details about the MAUD Committee's deliberations and activities. Some information from the MAUD Committee had already been conveyed to the United States by Ralph H. Fowler, the British scientific attaché to Canada. Cockcroft, a member of the Tizard Mission, brought more. Cockcroft and Fowler met with the Uranium Committee, but the information flow was largely one-way. Cockcroft reported that the American atomic bomb project lagged behind the British, and was not proceeding as fast. Work conducted in America included research by Szilard and Enrico Fermi at Columbia University into the possibility of a controlled nuclear chain reaction; preliminary investigations into isotope separation using centrifugation, gaseous diffusion and thermal diffusion processes; and efforts to produce plutonium in the cyclotron at the Radiation Laboratory at the University of California.