REFERENCES 1. C.F. Ksanda and others; “Gamma Radiation from Contaminated Planes and Slabs”; USNRDL TM-27, 15 February 1955; U.S. Naval Radiological Defense Laboratory, San Francisco 24, California; Unclassified. 2. R.W. Shnider; “Personne! Radiation Hazards Associated with Ships Immobilized by an Underwater Atomic Burst”; USNRDL-TR-5, 8 February 1954; U.S. Naval Radiological Defense Laboratory, San Francisco 24, California; Secret Restricted Data. 3. G.G. Molumphy and M.M. Bigger; “Proof Testing of Atomic Weapons Ship Countermeasures”; Project 6.4, Operation Castle, WT-927, October 1957; U.S. Naval Radiological Defense Laboratory, San Francisco 24, California; Confidential Formerly Restricted Data. 4. H.R. Rinnert: “Ship-Shielding Studies”; Project 2.71, Operation Redwing, WT-1321, July 1959; U.S. Naval Radiological Defense Laboratory, San Francisco 24, California; Confidential Formerly Restricted Data. 5. M.B. Hawkins and others; “Determination of Radiological Hazard to Personnel’; Project ‘2.4, Operation Wigwam, WT-—1012, May 1957; U.S. Naval Radiological Defense Laboratory, San Francisco 24, California; Official Use Only. 6. M.M. Bigger and others; “Shipboard Contaminant Ingress from Underwater Bursts”; Project 2.2, Operation Hardtack, WT-1620, draft manuscript; U.S. Naval Radiological Defense Laboratory, San Francisco 24, California; Confidential. ?. E.C. Evans and others; “Characteristics of the Radioactive Cloud from Underwater Bursts”; Project 2.3, Operation Hardtack, WT-1621, draft manuscript; U.S. Naval Radio- logical Defense Laboratory, San Francisco 24,California; Confidential Formerly Restricted Data. 8. E. Swift, Jr. and others; “Surface Phenomena from Underwater Bursts”; Project 1.3, Operation Hardtack, ITR-1608, January 1959; U.S. Naval Ordnance Laboratory, White Oak, Silver Spring, Maryland; Confidential Formerly Restricted Data. 9. D.J. Barnes; Edgerton, Germeshausen and Grier, Inc., Boston, Massachusetts; Letter and enclosure to: R. Willey, U.S. Naval Ordnance Laboratory, White Oak, Silver Spring, Maryland: Registry Numbers 854785/854786, Subject: “Up-to-date Summary of Analysis of Wahoo and Umbrella Records,” 27 May 1959; Confidential Formerly Restricted Data. 10. P.D. LaRiviere; “Early-Time Gamma Ray Properties of vu?3 Gross Fission Products”; USNRDL TM-89, 9 July 1958; U.S. Naval Radiological Defense Laboratory, San Francisco 24, California; Unclassified. 11. H. Goldstein and J.E. Wilkins, Jr. ; “Calculations of the Penetration of Gamma Rays”; NYO-3075, 30 June 1954; Nuclear Development Associates, Inc., White Plains, New York; Unclassified. 12. A.T. Nelms and J. W. Cooper; “U?® Fission Product Decay Spectra at Various Times After Fission”; NBS-5853, 11 April 1958; National Bureau of Standards, Washington, D.C.; Unclassified. 13. E. Laumets and C.F. Ksanda; “Technique for Estimating Gamma Dose Rate Spectra from Field Attenuation Measurements and Comparison of Results for Operation Castle”; 80

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