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Title:
LETTER TO W H LANGHAM, SUBJECT: RESPONSE TO THE CHALK RIVER PERMISSIBLE DOSE CONFERENCE RECOMMENDATIONS AS THEY RELATE TO PLUTONIUM ( REDACTED )
Author(s):
Subject Terms:
HREX; HISTORY - GENERAL; PLUTONIUM
Document Location:
Location - DOE/NNSA NUCLEAR TESTING ARCHIVE Address - P.O. Box 98521 City - Las Vegas State - NV Zip - 89193-8521 Phone - (702)794-5106 Fax - (702)862-4240 Email - NTA@NV.DOE.GOV
Document Type:
CORRESPONDENCE, LETTERS, MEMOS
Publication Date:
1950 Jan 13
Declassification Status:
Unknown
Document Pages:
0006
Accession Number:
NV0710261
OpenNet Entry Date:
1995 Feb 17
OpenNet Modified Date:
2017 Dec 15
Description/Abstract:
EVANS WRITES TO LANGHAM IN RESPONSE TO HIS LETTER OF DECEMBER 28, 1949. EVANS REFERS TO THE CHALK RIVER PERMISSIBLE DOSE CONFERENCE RECOMMENDATIONS, ESPECIALLY AS THEY RELATE TO PLUTONIUM. HE SUMMARIZES THE EFFECTS OF 16 YEARS OF OBSERVATIONS OF PATIENTS WITH RADIUM POISONING. HE DISCUSSES THE RELATIVE RISK TO THE GENERAL PUBLIC OF INTERNAL ALPHA EMITTERS SUCH AS RADIUM, AND, THUS, PLUTONIUM. EVANS WANTS TO COMPARE RISKS OF RADIUM DEPOSITION WITH PLUTONIUM BY REQUESTING TYPICAL BONE SAMPLES, PROBABLY HUMAN. EVANS FELT THAT THE CHALK RIVER CONFERENCE RECOMMENDED PERMISSIBLE DOSE LIMITS FOR PLUTONIUM OF 0. 1 MICROCURIES WERE TOO LOW. EVANS MENTIONS THAT THERE ARE IMPORTANT BUT UNKNOWN DIFFERENCES BETWEEN ACUTE AND CHRONIC RADIATION EFFECTS. EVANS MENTIONS THAT DR. SHIELDS WARREN GOT HIM INTERESTED IN INITIATING A PROGRAM TO STUDY RADIUM IN HUMANS AND THAT DR. WARREN HAD SUPPLIED HIM WITH HUMAN BONE SAMPLES FROM AMPUTATIONS AT HIS HOSPITAL (OAK RIDGE).


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