Manhattan Project

Statistics report on the Manhattan Project and nuclear attacks

Manhattan Project

This report presents a range of statistics relating to the Manhattan Project and the atomic attacks on Japan. The Manhattan Project led to the creation of the world's first nuclear weapons, which were then used against Japan and were instrumental in bringing the world's deadliest war to an end. This remains the only time in history where nuclear weapons were used in warfare, although it kickstarted a new era of nuclear proliferation during the Cold War, with far-reaching geopolitical consequences that remain important to this day. This report includes chapters relating to the funding of the project, the effects of the atomic attacks on Japan and nuclear weapons in general, as well as modern attitudes to the attacks in the United States.

Table of contents

Manhattan Project

6
  • Basic Statistic WWII: U.S. spending on selected explosive weapons programs 1941-1945
  • Basic Statistic Manhattan Project: cumulative costs by facility 1945
  • Basic Statistic Manhattan Project: monthly expenditure 1942-1946
  • Basic Statistic Manhattan Project: personnel by sector 1944
  • Basic Statistic Critical mass of selected elements and isotopes to sustain a nuclear chain reaction
  • Basic Statistic Half-life of the most stable isotope of radioactive elements

Attacks on Hiroshima and Nagasaki

5
  • Basic Statistic WWII: Hiroshima and Nagasaki casualties 1945
  • Basic Statistic WWII: Nagasaki casualties by distance from ground zero 1945
  • Basic Statistic WWII: height of nuclear bomb drops and detonations 1945
  • Basic Statistic Nuclear weapons: lethal radius by bomb size and shelter type
  • Basic Statistic Strength of the most powerful nuclear weapons since 1945

Effects of a hypothetical 1MT nuclear attack

5
  • Basic Statistic Nuclear weapons: estimated blast radius from a one megaton bomb by force
  • Basic Statistic Nuclear weapons: estimated chance of death or injury from a one megaton bomb
  • Basic Statistic Nuclear weapons: estimated wind velocity within blast radius
  • Basic Statistic Nuclear weapons: fallout levels after 24 hours by distance
  • Basic Statistic Nuclear weapons: distance by thermal radiation level

U.S. public opinion in 2020

6
  • Basic Statistic Hiroshima & Nagasaki: U.S. opinion on justification 2020, by gender
  • Basic Statistic Hiroshima & Nagasaki: U.S. opinion on justification 2020, by political affiliation
  • Basic Statistic Hiroshima & Nagasaki: U.S. opinion on justification 2020, by age group
  • Basic Statistic Hiroshima & Nagasaki: U.S. opinion on an apology 2020, by gender
  • Basic Statistic Hiroshima & Nagasaki: U.S. opinion on an apology 2020, by political affiliation
  • Basic Statistic Hiroshima & Nagasaki: U.S. opinion on an apology 2020, by age

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