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DERAL
VOLUME 20

REGISTER
1934

A ilT E O

NUMBER 17

Washington, Tuesday, January 25, 1955
TITLE 32 -NATIONAL DEFENSE carry one of the following designations:
Chapter V Department of the Army Subchapfer A Aid of Civil Authorities and PubHc Relations
P art 505S afeguarding D efense I nformation REVISION OF PART

The headnote of P art 505 is changed to read Safeguarding Defense Informa tion as set forth above and the re
mainder of the part is revised to read as follows:
Sec.
505.1
Defense inform ation.
505.2
Classification categories.
505.3
Definition of Top Secret.
505.4
Reproduction of Top Secret.
505.5
Definition of Secret.
505.6 Definition of Confidential.
505.7
Persons authorized to receive classi fied inform ation.
505.8 Discussions Involving classified in
formation.
505.9
Telephone conversations.
505.10 Personnel retiring or separating from service.
505.11 Publications.
505.12 Collection of classified m aterial for personal use.
505.13 Classification markings.
505.14 Public display o f classified materiel.
505.15 Classified defense inform ation in hands o f contractors.
505.16 Compromise or possible compromise.
505.17 A uthority for adm ission o f visitors.
505.18 Rsponsibility of commanding officer regarding visitors.
505.19 Responsibility of Government con tractors regarding visitors.
505.20 Restricted areas.
A u t h o r it y : 505.1 to 505.20 issued under R S. 161; 6 U. S. C. 22.
S o urce : AR 380-5, December 7, 1954; AR
38020, September 29, 1954; and AR 380-4006, November 22 , 1950.

- 50.1 Defense information. Defense information is that official information which requires protection in the interests of national defense, which is not common knowledge, and which would be of in telligence value to an enemy or potential enemy in the planning or waging of war against the United States or its allies.
Such information will be classified un der this part.
505.2 Classification categories. De fense information will be limited to three categories of classification, which in descending order of importance will
CONTENTS

Top Secret, Secret, or Confidential.
505.3 Definition of Top Secret. The Agricultural Marketing Service PaS
use of the classification Top Secret will Rules and regulations:
Milk handling in Neosho Valley be limited to defense information or marketing a r e a ..____ _____
541
material which requires the highest de gree of protection. The Top Secret clas Agriculture Department sification will be applied only to th at See also Agricultural Marketing information or material the defense as Service ; Farmers Home Admin pect of which is paramount, and the istration.
unauthorized disclosure of which could Notices:
result in exceptionally grave damage to Special Emergency Loan Pro the Nation such as:
gram; assignment of func a Leading to a definite break in tions to Farmers Home Ad diplomatic relations affecting the de 552
ministration, j_____________
fense of the United States, an armed Alien Property Office attack against the United States or its Notices:
Allies, a war, or Vested property, intention to re b The compromise of military or turn:
defense plans, or intelligence operations, DOnofrio, Antonio.________ 551
or scientific or technological develop van Overeem, Marius Leon ments vital to the national defense.
ard_____________
552
505.4 Reproduction of Top Secret Army Department a Annotation limiting reproduction.
and regulations:
At the time of issuance of any document Rules Safeguarding defense informa which qualifies for assignment to the tion_________________ ____
537
Top Secret category, the issuing au thority will insure that each copy of the Civil Aeronautics Administra document contains a notation substan tion tially in one of the forms indicated in Rules and regulations:
subparagraph 1 or 2 of this Standard instrument approach paragraph.
procedures; procedure al1 Reproduction of this document in terations____ ____________ 543
whole or in part is prohibited except with Correction_____ ___ ___ ;__ _ 542
permission of the issuing office.
Civil Aeronautics Board 2 Reproduction of paragraphs___ -Notices:
of this document is prohibited except Pan American World Airways;
with permission of the issuing office.
Guatemala City-Los Angeles 3 Notation under subparagraphs renewal case; hearing_____
554
1 or 2 of this paragraph will not be Proposed rule making:
included in the text of messages. Re Flight engineer experience re production of electrically transmitted quirements with respect to messages will be accomplished by only the type of aircraft________ 550
one office within each headquarters. or Scheduled air carrier pilot air agency. The number of copies repro port qualification without duced will be kept to the absolute mini prior take-off and landing 550
mum required td accomplish the required Civil Service Commission activities.
b Authority to copy, make extractsRules and regulations:
Competitive service, exceptions from or reproduce Top Secret material.
from ; United States Informa Top Secret material may be copied, ex tion Agency------ --------- ----549
tracted from, or reproduced for operational purposes only when the issu Commerce Department ing office has authorized such re See Civil Aeronautics Administra production. <
tion; National Shipping Author ity..
505.5 Definition of Secret. The use of the classification Secret will be limited Defense Department See Army Department.
Continued on next page 537