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NORRIS E. BRADBURY May 30, 1909–August 20, 1997
NATIONAL ACADEMY OF SCIENCES N O R R I S E . B R A D B URY 1909—1996 A Biographical Memoir by H A R O L D M. Ag NE W AN D RA E M E R E . S C HREIB ER Any opinions expressed in this memoir are those of the author(s) and do not necessarily reflect the views of the National Academy of Sciences. Biographical Memoir COPYRIGHT 1998 NATIONAL ACADEMIES PRESS WASHINGTON D.C. Courtesy of Los Alamos Scientific Laboratory NORRIS E. BRADBURY May 30, 1909–August 20, 1997 BY HAROLD M. AGNEW AND RAEMER E. SCHREIBER ORRIS E. (EDWIN) BRADBURY died August 20, 1997, at the Nage of eighty-eight. He succeeded J. Robert Oppen- heimer as director of the Los Alamos Laboratory in Octo- ber 1945 with the understanding that his appointment was an interim one, perhaps only for six months. Instead, he held the position of laboratory director for twenty-five years before retiring. Under his leadership, the laboratory recov- ered from the postwar doldrums and became internation- ally renowned for advanced research and development in a variety of fields. Much of the work was aimed at under- standing the use of nuclear energy, but important work was also done in related fields, such as computing, biosciences, and space technology. Norris Bradbury was born May 30, 1909, in Santa Bar- bara, California, one of four children of Edwin Pearly and Elvira (Clausen) Bradbury. He grew up in southern Califor- nia and attended Hollywood High School and then Chaffey Union High School in Ontario, California, where he gradu- ated at the age of sixteen. -
Making a Manhattan Project National Historical Park
Atomic Heritage Foundation Preserving and Interpreting Manhattan Project History & Legacy Making A manhattan Project National Historical Park AnnualAnnual ReportReport 2010 Why should We Preserve the Manhattan Project? “The factories and bombs that Manhattan Project scientists, engineers, and workers built were physical objects that depended for their operation on physics, chemistry, metallurgy, and other natural sciences, but their social reality - their meaning, if you will - was human, social, political. We preserve what we value of the physical past because it specifically embodies our social past. When we lose parts of our physical past, we lose parts of our common social past as well.” “The new knowledge of nuclear energy has undoubtedly limited national sovereignty and scaled down the destructiveness of war. If that’s not a good enough reason to work for and contribute to the Manhattan Project’s historic preservation, what would be?” -Richard Rhodes, “Why We Should Preserve the Manhattan Project,” Bulletin of the Atomic Scientists, May/June 2006 Remnant of the K-25 plant during the demolition of the east wing. See story on page 6. Front cover (clockwise from upper right): The B Reactor at Hanford, J. Robert Oppenheimer’s house in Los Alamos, and the K-25 Plant at Oak Ridge. These properties are potential components of a Manhattan Project National Historical Park. Table of Contents Board Members & Advisory Committee............3 George Cowan and Jay Wechsler Letter from the President......................................4 Manhattan Project Sites: Past & Present.......5 Saving K-25: A Work in Progress..........................6 AHF Releases New Guide............................................7 LAHS Hedy Dunn and Heather McClenahan. -
Manhattan Park Map
Manhattan Project National Historical Park - Los Alamos National Park Service 475 20th Street, Suite C U.S. Department of the Interior Manhattan Project National Historical Park Los Alamos, NM 87544 Los Alamos, New Mexico 505-661-MAPR (6277) Project Y workers with the Norris Bradbury with Thin Man plutonium gun the Trinity device. device at Gun Site. In 1943, the United States government’s Manhattan Three locations comprise the park: Project Y at Los Alamos, Project built a secret laboratory at Los Alamos, New New Mexico; Site X at Oak Ridge, Tennessee; and Site W at site map SITES ON THIS PAGE Mexico, for a single military purpose—to develop the Hanford, Washington. The Manhattan Project National world’s first atomic weapons. The success of this Historical Park legislation references 17 sites at Los Alamos NOT CURRENTLY unprecedented, top-secret government program National Laboratory, as well as 13 sites in downtown Los forever changed the world. Alamos. These sites represent the world-changing history of Original Technical Area 1 OPEN TO THE PUBLIC (TA-1); see reverse. the Manhattan Project at Los Alamos. Their preservation and In 2004, the U.S. Congress directed the National Park interpretation will show visitors the scientific, social, Service and the Department of Energy to determine political, and cultural stories of the men and women who the significance, suitability, and feasibility of including ushered in the atomic age. signature facilities in a national historical park. In 2014, the National Defense Authorization Act, signed by President Obama, authorized creation of the Park. This The properties below are within the legislation stated the purpose of the park: “to improve Manhattan Project National Historical Park 4 the understanding of the Manhattan Project and the boundaries on land managed by the legacy of the Manhattan Project through Department of Energy. -
Manhattan Project National Historical Park
Manhattan Project National Historical Park Pond Cabin, built in 1914, is listed on the New Mexico State Register of Historic Places and is the only surviving log structure at the Laboratory dating to the Homestead period. (Photo: Los Alamos) Plans for America’s newest national park include admitting the public onto Laboratory property— without compromising national security or the Lab’s mission. In 1914, Detroit businessman Ashley Pond constructed plutonium chemistry research that resulted in the surprising a log cabin on the Pajarito Plateau in north-central New discovery that the Tin Man plutonium gun-type weapon Mexico. Te one-room structure served as the ofce for the design would never work. As a result, the wartime Laboratory Pajarito Club, a guest ranch for well-heeled city folk looking was extensively reorganized to develop an alternative: the for a little Wild West adventure. Although the Pajarito Club incredibly complex Fat Man plutonium implosion-type was short-lived (it disbanded in 1916), Pond remained in the weapon. area and went on to found the Los Alamos Ranch School in Today, Pond Cabin is one of nine Laboratory properties 1917. Te elite prep school ofered classical education and included in Manhattan Project National Historical Park rigorous outdoor activity for boys ages 12–18. But once (MPNHP), which was signed into law on November more, Pond’s business venture was feeting. In 1942, the 10, 2015, and tells the story of America’s nuclear weapons U.S. government purchased the school and launched science, technology, and industry during World War II. Te Project Y (now Los Alamos National Laboratory) of the Los Alamos site is one of three locations for the park—the Manhattan Project in its stead. -
July 7 – 12, 2020
Los Alamos: Secret City of the Manhattan Project. Tour from 109 E. Palace Ave., Santa Fe to Los Alamos. Have fun & learn about the Atomic City. Available for free at the Apple App Store: http://apple.co/29da6Jv & Android version at Google Play: http://bit.ly/2oRT6OV Catch the Atomic City Tour to really get to know Los Alamos. Meet in front of Bradbury Science Museum, 1:30pm most days. Tour $25 per person. Reserve your seat in advance. 1350 Central Avenue. (505) 662-2547 atomiccitytours.com July 7 – 12, 2020 Guided walking tour by the Los Alamos Historical Society with a special emphasis on Los Alamos Spies. Meets at Los Alamos History Museum, 1050 Bathtub Row. Tours are $15 per person from 11:00am – 12:30pm everday except Sunday. (505) 662-6272. [email protected] Dorothy McKibbin welcomed scientists and others at this innocuous looking building just off the Plaza. The “Gatekeeper of Los Alamos” became nearly as vital to the Project as the top scientists. Newcomers would enter the building and disappear through the back door to be ferried up “The Hill” to work at the Secret City. La Fonda has a 95 year old history that will transport you back in time. Have a drink at the lobby bar which was a favorite watering hole for Manhattan Project scientists and spies. Complementary Art & History Tour offered Wednesday through Saturday 10:30-11:30. Tours are limited to 12 people and you are encouraged to sign up with the concierge to reserve a spot. (505) 982-5511 lafondasantafe.com/about/docent-tours Stay in this historic Bed & Breakfast where Manhattan Project spies stayed. -
MAPR OR October 2020 Newsletter
National Park Service October 2020 Department of the Interior Manhattan Project National Historical Park Oak Ridge, Tennessee Manhattan Project History in October Walk Through Wheat with a Ranger on Saturday, Oc- • DuPont was put in charge of the plutonium production project tober 3 at 10 am ET. The walk will be approximately 1.5 in October of 1942. miles with stops to discuss points of interest in the historic • Once considered to be a potential uranium separation method, community. The trail is wide making it easy for social distanc- centrifuge separation was abandoned in October 1942 due to ing and masks are encouraged. Wheat is located on Blair technical problems. Road 0.3 miles off Oak Ridge Turnpike. • On October 15, 1942 J. Robert Oppen- heimer was asked to head Project Y, later know as Los Alamos scientific re- Grab Your Helmet and Bike with a search laboratory. Ranger along Melton Lake Green- • The first Alpha racetrack was complet- way Saturday, October 10 at 10 am ed in October 1943 but fails to start ET. We’ll stop several times to point due to unforeseen shorts in the mag- nets. out the rich history that is found with- • Hanford B Reactor site preparation in the Oak Ridge area. We’ll start at began on October 10, 1943. Elza Gate Park, 101 Oak Ridge Turn- • Construction of the X-10 Graphite Re- pike. The ride will be ~ 8 miles round actor was completed on October 31, trip so bring drinking water. 1943 and goes critical for the first time in the early hours of the morning a few Paddle with A Ranger on Saturday days later. -
BRITISH SCIENTISTS and the MANHATTAN PROJECT Also by Ferenc Morton Szasz
BRITISH SCIENTISTS AND THE MANHATTAN PROJECT Also by Ferenc Morton Szasz THE DIVIDED MIND OF PROTESTANT AMERICA RELIGION IN THE WEST (editor) THE DAY THE SUN ROSE TWICE: The Story of the Trinity Site Nuclear Explosion, July 16, 1945 THE PROTESTANT CLERGY IN THE GREAT PLAINS AND MOUNTAIN WEST British Scientists and the Manhattan Project The Los Alamos Years Ferenc Morton Szasz Professor of History University of New Mexico, Albuquerque MMACMILLAN © Ferenc Morton Szasz 1992 Softcover reprint of the hardcover 1st edition 1992 All rights reserved. No reproduction, copy or transmission of this publication may be made without written permission. No paragraph of this pub1ication may be reproduced, copied or transmitted save with written permission or in accordance with the provisions of the Copyright, Designs and Patents Act 1988, or under the terms of any 1icence permitting 1imited copying issued by the Copyright Licensing Agency, 33-4 A1fred P1ace, London WClE 7DP. Any person who does any unauthorised act in relation to this publication may be liab1e to crimina1 prosecution and civil claims for darnages. First published 1992 by MACMILLAN ACADEMIC AND PROFESSIONAL LTD. Houndmills, Basingstoke, Hampshire RG21 2XS andLondon Companies and representatives throughout the world ISBN 978-1-349-12733-7 ISBN 978-1-349-12731-3 (eBook) DOI 10.1007/978-1-349-12731-3 A catalogue record for this book is available from the British Library. For Margaret and Maria Contents Preface IX Introduction Xlll Background 2 The British Mission at Los Alamos: The Scientific -
Oppenheimer: a Life April 22, 1904-February 18, 1967
Oppenheimer: A Life April 22, 1904-February 18, 1967 an online centennial exhibit of J. Robert Oppenheimer http://ohst.berkeley.edu/oppenheimer/exhibit/ This print edition of the online exhibit is free for use, reproduction, and distribution for educational purposes as long as this cover page and the acknowlegments page are included. It may not be altered or sold. For other usage questions, please contact the Office for History of Science and Technology, Univer- sity of California, Berkeley, at http://ohst.berkeley.edu. All image copyrights are retained by their hold- ers. © 2004 by The Regents of the University of California. 1 Oppenheimer: A Life April 22, 1904-February 18, 1967 Introduction As Alice Kimball Smith and Charles Weiner have noted, “Part of Oppenheimer’s attraction, at first for his friends and later for the public, was that he did not project the popularly held image of the scientist as cold, objective, rational and therefore above human frailty, an image that scientists themselves fostered by underplaying their per- sonal histories and the disorder that precedes the neat scientific conclusion.” There is a cacophony of conflicting descriptions of Oppenheimer – as friends have remembered him, as historians have analyzed him. He has been labeled both warm and cold, friendly and condescending, affable as well as hurtful. Learning Sanskrit and cultivating the air of an aesthete, as a young professor he stretched the bounds of the scientist’s persona. Yet in the space of a decade, the otherworldly theorist was transformed into a political insider par excellence. His fellow scientists remembered him as a visionary and capable leader at Los Alamos, while his security hearing brought to light foolish mistakes in judgment and human relationships. -
Chapter Four Making Light of the Light Elements
Chapter Four Making Light of the Light Elements Although itself a significant technical obstacle to the H-bomb project, Los Alamos found computing as only one of several critical problems. Other problems arose, as well, and weapons scientists acknowledged them at various times. Von Neumann, Teller, Wheeler and others early on established computing as a technical problem that stood in the way of understanding the Super configuration’s feasibility. Nuclear materials were also a bottleneck to the hydrogen weapon program, yet Los Alamos’s scientists recognized this problem later than they had the computing obstacle. Tritium in particular, from the time Konopinski had suggested incorporating this isotope into the Super theory, was a latent obstacle to the H-bomb program. After the Soviet Union detonated its first atomic weapon in 1949 tritium scientists began to view tritium as a serious critical problem facing the American thermonuclear project. Although the Russian A-bomb test represented in the United States a political event outside of the AEC technological system -- this event nevertheless forced both scientists and policymakers to reconsider the AEC’s pace and the intensity of nuclear weapons research. Only then the Commission called its materials production facilities into question. After President Truman instructed the AEC to explore further the hydrogen weapon in 1950, and when Ulam and his colleague’s calculations began to 174 show the ignition problems facing the Super, the tritium problem became blatant. Consequently, the Committee for Weapon Development demonstrate with reasonable certainty that the 1945-1946 ENIAC calculations were wrong. In 1949 the AEC found itself unprepared to begin a program of large- scale tritium production in part because its predecessor, the MED, had not constructed any facilities specifically for this purpose. -
Hands Meeting
U. S. Department of Energy National Nuclear Security Administration Los Alamos Field Office Los Alamos National Laboratory LosLos Alamos Field Site Office 1 Site History Scientists in Nazi Germany discovered nuclear fission in late 1938. Refugee scientists Leo Szilard, Edward Teller and Eugene Wigner feared that the energy released in nuclear fission might be used in bombs by the Germans. They persuaded Albert Einstein, America's most famous physicist, to warn President Franklin Roosevelt of this danger in an Aug. 2, 1939, letter. In response to the warning, Roosevelt ordered increased research in nuclear physics. Los Alamos Site Office Site History Continued The United States initiated its own program under the Army Corps of Engineers in June 1942. America needed to build an atomic weapon before Germany or Japan did. General Leslie R. Groves, Deputy Chief of Construction of the U.S. Army Corps of Engineers, was appointed to direct this top-secret project. He in turn selected J. Robert Oppenheimer as the director. The search for a site began immediately. Los Alamos Site Office Site History The site of the Manhattan Project, Project Y was selected on November 16, 1942. It was the Los Alamos Ranch School, located on an isolated mesa in the Pajarito Plateau. The selection of the Project Y site must have several considerations: *It had to have adequate housing for 30 scientists. *The land had to be owned by the government or to be easily acquired in secrecy. *It had to be large enough and uninhabited so as to permit safe separation of sites for experiments. -
The Bradbury Years 1943-1945
THE n late 1945 a small group of courageous and loyal scientists and technicians undertook to continue the post-war operation of the Los Alamos Scientific Laboratory. These men believed that atomic weapons development had barely begun, that other countries would develop such weapons, and that the safety and security of the United States-if not of the world-depended upon the technical lead of this country. These men had the courage to stay at Los Alamos in the face of an uncertain future. These men did not make demands nor require promises. These men stayed and built the greatest weapons laboratory this country has ever known. These men stayed and developed the greatest array of powerful and flexible atomic weapons of any country in the world-developed them faster, developed them where they were urgently needed and requested by the Armed Forces-developed them to fit the productive resources of the newly established Atomic Energy Commission. They stayed and built a laboratory that developed every successfuZ thermonuclear weapon that exists today. Others left, but these men stayed and worked, and many others came to join them. LOS ALAMOS SCIENCE WinterISpring 1983 What these men accomplished cannot be told in detail, for these its developments while it was further expanding its scientific staff. facts are classified TOP SECRET. These men do not talk. They Had the Laboratory attempted to exploit the thermonuclear field believe in deeds, not words. But these deeds earned for the Los to the exclusion of the fission field in 1946, what would have Alamos Scientific Laboratory the only Presidential Citation ever happened? Hypothetical history can only be an educated guess, but awarded to any laboratory for its extraordinary success in the the guess in this case is almost certain. -
Scientists and the Decision to Build the Superbomb, 1952-1954
In Any Light: Scientists and the Decision to Build the Superbomb, 1952-1954 Author(s): Peter Galison and Barton Bernstein Source: Historical Studies in the Physical and Biological Sciences, Vol. 19, No. 2 (1989), pp. 267-347 Published by: University of California Press Stable URL: https://www.jstor.org/stable/27757627 Accessed: 09-09-2019 20:44 UTC JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at https://about.jstor.org/terms University of California Press is collaborating with JSTOR to digitize, preserve and extend access to Historical Studies in the Physical and Biological Sciences This content downloaded from 206.253.207.235 on Mon, 09 Sep 2019 20:44:00 UTC All use subject to https://about.jstor.org/terms PETER GALISON* AND BARTON BERNSTEIN** In any light: Scientists and the decision to build the Superbomb, 1952-1954 If the development [of the hydrogen bomb] is possible, it is out of our powers to prevent it. All that we can do is to retard its completion by some years. I believe, on the other hand, that any form of international control may be put on a more stable basis by the knowledge of the full extent of the problem that must be solved and of the dangers of a ruth less international competition.