Oliphant then visited his friend Ernest Lawrence, an American Nobel Prize winner, to explain the urgency. Lawrence contacted Compton and James B. Conant, who received a copy of the final MAUD Report from Thomson on 3 October 1941. Harold Urey, also a Nobel Prize winner, and George B. Pegram were sent to the UK to obtain more information. In January 1942, the OSRD was empowered to engage in large engineering projects in addition to research. Without the help of the MAUD Committee the Manhattan Project would have started months behind. Instead they were able to begin thinking about how to create a bomb, not whether it was possible. Gowing noted that "events that change a time scale by only a few months can nevertheless change history." On July 16, 1945, the Manhattan Project detonated the first atomic bomb in the Trinity nuclear test.