With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Leslie Groves died before the Manhattan Project began.
text_B: Lieutenant General Leslie Richard Groves Jr. -LRB- 17 August 1896 -- 13 July 1970 -RRB- was a United States Army Corps of Engineers officer who oversaw the construction of the Pentagon and directed the Manhattan Project , a top secret research project that developed the atomic bomb during World War II .. United States Army. United States Army. Lieutenant General. Lieutenant General ( United States ). Manhattan Project. Manhattan Project. World War II. World War II. United States Army Corps of Engineers. United States Army Corps of Engineers. officer. Officer ( armed forces ). the Pentagon. the Pentagon. atomic bomb. atomic bomb. As the son of a United States Army chaplain , Groves lived at a number of Army posts during his childhood .. United States Army. United States Army. chaplain. chaplain. He graduated fourth in his class at the United States Military Academy at West Point in 1918 and was commissioned into the U.S. Army Corps of Engineers .. United States Military Academy. United States Military Academy. West Point. West Point. U.S. Army Corps of Engineers. United States Army Corps of Engineers. In 1929 , he went to Nicaragua as part of an expedition whose purpose was to conduct a survey for the Inter-Oceanic Nicaragua Canal .. Nicaragua. Nicaragua. Inter-Oceanic Nicaragua Canal. Inter-Oceanic Nicaragua Canal. Following the 1931 Nicaragua earthquake , Groves took over responsibility for Managua 's water supply system , for which he was awarded the Nicaraguan Presidential Medal of Merit .. Medal of Merit. Medal of Merit ( Nicaragua ). Nicaragua. Nicaragua. 1931 Nicaragua earthquake. 1931 Nicaragua earthquake. Managua. Managua. He attended the Command and General Staff School at Fort Leavenworth , Kansas , in 1935 and 1936 , and the Army War College in 1938 and 1939 , after which he was posted to the War Department General Staff .. Command and General Staff School. Command and General Staff School. Fort Leavenworth. Fort Leavenworth. Kansas. Kansas. Army War College. United States Army War College. War Department. United States Department of War. General Staff. General Staff. In 1940 Groves , who `` had a reputation as a doer , a driver , and a stickler for duty '' , became special assistant for construction to the Quartermaster General , tasked with inspecting construction sites and checking on their progress .. Quartermaster General. Quartermaster General ( United States ). In August 1941 , he was given responsibility for the gigantic office complex to house the War Department 's 40,000 staff which would ultimately become the Pentagon .. the Pentagon. the Pentagon. War Department. United States Department of War. In September 1942 , Groves took charge of the Manhattan Project .. Manhattan Project. Manhattan Project. He was involved in most aspects of the atomic bomb 's development .. atomic bomb. atomic bomb. He participated in the selection of sites for research and production at Oak Ridge , Tennessee ; Los Alamos , New Mexico ; and Hanford , Washington .. He directed the enormous construction effort , made critical decisions on the various methods of isotope separation , acquired raw materials , directed the collection of military intelligence on the German nuclear energy project and helped select the cities in Japan that were chosen as targets .. military intelligence. military intelligence. German nuclear energy project. German nuclear energy project. Japan. Japan. Groves wrapped the Manhattan Project in security but failed to prevent the Union of Soviet Socialist Republics from conducting a successful espionage program that stole some of its most important secrets .. Manhattan Project. Manhattan Project. Union of Soviet Socialist Republics. Union of Soviet Socialist Republics. espionage. atomic spies. After the war , Groves remained in charge of the Manhattan Project until responsibility for nuclear weapons production was handed over to the United States Atomic Energy Commission in 1947 .. Manhattan Project. Manhattan Project. United States Atomic Energy Commission. United States Atomic Energy Commission. He then headed the Armed Forces Special Weapons Project , which had been created to control the military aspects of nuclear weapons .. Armed Forces Special Weapons Project. Armed Forces Special Weapons Project. He was given a dressing down by the Chief of Staff of the United States Army , General of the Army Dwight D. Eisenhower , and told that he would never be appointed Chief of Engineers .. United States Army. United States Army. Chief of Staff of the United States Army. Chief of Staff of the United States Army. General of the Army. General of the Army. Dwight D. Eisenhower. Dwight D. Eisenhower. Three days later , Groves announced his intention to leave the Army .. He was promoted to lieutenant general just before his retirement on 29 February 1948 in recognition of his leadership of the bomb program .. lieutenant general. Lieutenant General ( United States ). By a special Act of Congress , his date of rank was backdated to 16 July 1945 , the date of the Trinity nuclear test .. Trinity nuclear test. Trinity ( nuclear test ). He went on to become a vice-president at Sperry Rand .. Sperry Rand. Sperry Rand
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