The Mathematical Tables Project became an independent organization following the termination of the WPA at the end of 1942. During World War II, it operated as a major computing office for the US government and did calculations for the Office of Scientific Research and Development, the Army's map grid, the Navy's LORAN radio navigation system, the Manhattan Project and other institutions. The project also performed important calculations for Operation Overlord. Using a mathematical model developed by Jerzy Neyman, the group helped evaluate strategies designed to bomb the Normandy beaches. Blanch led the group throughout the war.
