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ETEXTS*Ver.04.29.93*END*
PROJECT TRINITY 1945-1946
by Carl Maag and Steve Rohrer
United States Atmospheric Nuclear Weapons Tests Nuclear Test
Personnel Review
Prepared by the Defense Nuclear Agency as Executive Agency for the
Department of Defense
Destroy this report when it is no longer needed. Do not return to
sender.
PLEASE NOITIfY THE DEFENSE NUCLEAR AGANCY, ATTN:
STTI, WASINGTON D.C. 20305, IF YOUR ADDRESS IS
INCORRECT, IF YOU WISH TO BE DELETED FROM THE
DISTRIBUTION LIST, OR IF THE ADDRESSEE IS NO LONGER
EMPLOYED BY YOUR ORGANIZATION.
Since declassified
CONTENTS:
LIST OF FIGURES LIST OF ABBREVIATIONS AND ACRONYMS
REPORT DOCUMENTATION PAGE FACT SHEET PREFACE
CHAPTERS
: 1 INTRODUCTION 1.1 Historical Background of Project TRINITY
1.2 The Project TRINITY Site 1.3 The Project TRINITY Organization
1.4 Military and Civilian Participants in Project TRINITY
2 THE ACTIVITIES AT PROJECT TRINITY 2.1 Preshot Activities
2.2 Detonation and Postshot Activities 2.3 Activities after 16 July 1945
3 RADIATION PROTECTION AT PROJECT TRINITY 3.1
Organization 3.2 Site Monitoring Group 3.3 Offsite Monitoring Group
4 DOSIMETRY ANALYSIS OF PARTICIPANTS IN PROJECT
TRINITY 4.1 Film Badge Records 4.2 Gamma Radiation Exposure
REFERENCE LIST
LIST OF FIGURES
1-1 Location of Alamogordo Bombing Range 1-2 TRINITY Site and
Major Installations 1-3 Tent Used as Guard Post at Project TRINITY
1-4 Truck Used as Guard Post at Project TRINITY 1-5 Organization of
Project TRINITY 2-1 The TRINITY Shot-tower 2-2 The TRINITY
Detonation, 0530 Hours, 16 July 1945 2-3 The South Shelter (Control
Point) 2-4 Inside One of the Shelters 2-5 The Base Camp, Headquarters
for Project TRINITY 2-5 The Base Camp, Headquarters for Project
TRINITY 2-6 Project TRINITY Personnel Wearing Protective
Clothing 2-7 "JUMBO" after the TRINITY Detonation
LIST OF ABBREVIATIONS AND ACRONYMS
The following abbreviations and acronyms are used in this volume:
AEC Atomic Energy Commission DOD Department of Defense LASL
Los Alamos Scientific Laboratory MAUD [Committee for the] Military
Application of Uranium Detonation MED Manhattan Engineer District
R/h roentgens per hour UTM Universal Transverse Mercator
REPORT DOCUMENTATION PAGE
SECURITY CLASSIFICATION OF THIS PAGE (When Data
Entered): UNCLASSIFIED
1. REPORT NUMBER: DNA 6028F 2. GOVT ACCESSION NO.: 3.
RECIPIENT'S CATALOG NUMBER: 4. TITLE (and Subtitle):
PROJECT TRINITY 1945-1946 5. TYPE OF REPORT & PERIOD
COVERED: Final Report 6. PERFORMING ORG. REPORT
NUMBER: JRB 2-816-03-423-00 7. AUTHOR(S): Carl Maag, Steve
Rorer 8. CONTRACT OR GRANT NUMBER(S): DNA
001-79-C-0473 9. PERFORMING ORGANIZATION NAME AND
ADDRESS: JRB Associates 8400 Westpark Drive McLean, Virginia
22102 10. PROGRAM ELEMENT. PROJECT, TASK AREA &
WORK UNIT NUMBERS: Subtask U99QAXMK506-08 11.
CONTROLLING OFFICE NAME AND ADDRESS: Director Defense
Nuclear Agency Washington, D.C. 20305 12. REPORT DATE: 15
December 1982 13. NUMBER OF PAGES: 76 14. MONITORING
AGENCY NAME & ADDRESS(if different from Controlling Office):
15. SECURITY CLASS. (of this report): UNCLASSIFIED 15a.
DECLASSIFICATION/DOWNGRADING SCHEDULE: N/A Since
UNCLASSIFIED 16. DISTRIBUTION STATEMENT (of this Report):
Approved for public release; distribution unlimited. 17.
DISTRIBUTION STATEMENT (of the abstract entered In Block 20, If
different from Report): 18. SUPPLEMENTARY NOTES: This work
was sponsored by the Defense Nuclear Agency under RDT&E RMSS
Code B350079464 U99QAXMK50608 H2590D. For sale by National
Technical Information Service, Springfield, VA 22161.
The Defense Nuclear Agency Action Officer, Lt. Col. H. L. Reese,
USAF, under whom this work was done, wishes to acknowledge the
research and editing contribution of numerous reviewers in the military
services and other organizations in addition to those writers listed in
block 7.
19. KEY WORDS (Continue on reverse side if necessary and Identify
by block number): TRINITY Los Alamos Scientific Laboratory
Alamogordo Bombing Range Manhattan Engineer District Manhattan
Project Personnel Dosimetry Radiation Exposure Nuclear Weapons
Testing 20. ABSTRACT: This report describes the activities of an
estimated 1,000 personnel, both military and civilian, in Project
TRINITY, which culminated in detonation of the first nuclear device,
in New Mexico in 1945. Scientific and diagnostic experiments to
evaluate the effects of the nuclear device were the primary activities
engaging military personnel.
FACT SHEET
Defense Nuclear Agency Public Affairs Office Washington, D C.
20305
Subject: Project TRINITY
Project TRINITY, conducted by the Manhattan Engineer District
(MED), was designed to test and assess the effects of
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