USCIB: 13. 7/35 

'i'OP SEefm'.r 

MEMORANDUM FOR THE MEMBERS OF USCIB: 

'Y24 

APPENDED DOCUMENTS CONTAIN 

CODEWORD MATERIAL 

20 September 1954 

Subject: 

References: 

Delineation of Categories of CCMINT. 

(a) USCIB 13.7/33 of 30 August 1954. 

(b) USCIB 13.7/34 of 13 September 1954. 

1. Reference (a) as modified by reference (b) was approved by 

USCIB on 16 September 1954. 

2. Accordingly, the notifications included herewith as enclosures 

1 and 2 were despatched on 17 September 1954 to London and Ottawa 

respectively together with suitably revised copies of the enclosure with 

INT # 0005 of 27 August (see enclosure with reference (a)). 

3. For the convenience of members a copy of the "Categories of 

COMINT" as agreed by USCIB and sent to London and ottawa is included 

herewith as enclosure 3. 

4. THIS DOCUMENT' CONTAINS COMMUNICATIONS INTELLIGENCE INFORMATION 

AND SHALL BE HANDLED ONLY IN CHANNELS EXPRESSLY PROVIDED FOR COMINT. 

Enclosures 

l. CIB # 000245 dtd 16 Sep 1954. 

2. CIB # 000246 dtd 16 Sep 1954. 

3. "Categories of COM.INT". 

USCIB: 13. 7 /35 

TOP SECRET 

APPENDED DOCUMENTS CONTAIN 

CODEWORD MATERIAL 

I 

Declassified and approved for release by NSA on 02-24-2014 pursuantto E.O. 1352a 
UNITED STATES COMMUNICATIONS INTELLIGENCE BOARD 

WASHINGTON 25, D. C. 

OFFICE OF THE CHAIBMAN CIB # 000245 

'f Of' BEeftffi' F'RO'i'II 16 September 1954 

MEMORANDUM FOR SECRETARY, LONDON SIGNAL INTELLIGENCE BOARD: 

Subject: Delineation of Categories of COMINT. 

1. Further to the provisions of paragraph 11 of Appendix 11B11 to our 

Agreement, the enclosed delineation or categories of COMINT is forwarded. 

2. USCIB appreciates the fact that this initial delineation of 

categories and assignment or CCMINT may not be as specific in all respects 

as may have been originally envisioned. However, it is felt that the 

enclosure recommends the most complete delineation practicable at this 

time. · 

3. With respect to paragraph 3b, Annexure Bl, of Appendix 11B11 , USCIB 

has designated the Director, NSA, as the agent of USCIB to negotiate with 

the Directors, GCHQ I Ion ~~~ matters of categorization requiring 

US/UK I lagreementu an4mt.() 1.rif~:rmu ~l'l.~ml)irectors,UGCHQUI lof 

assignments authorized by the U.S. Eo 3. 31h1 12 1 

PL 86-36/50 USC 3605 

4. USCIB would be grateful for an early indication from your Board 

as to whether or not the enclosed listings are an agreeable starting 

point, and if so, what would be a convenient date upon which to make them 

effective. In this connection USCIB would favor a general code word 

change incident to. the introduction of categories as the connotation of 

code words to be used with categories will be somewhat more general than 

formerly. If a general code word change is agreed, a minimum of six 

weeks lead time in preparation for it would be necessary on the U.S. side. 

5. It is considered that introduction of categories will constitute 

the final step in full implementation of the new Appendix 11B11 and that we 

therefore should regard new Appendix 11B11 in full effect as or whatever 

date we agree on for the intreduction of categories. 

6. If we could receive by 15 October your notification of approval 

to include a general code word change we could plan on 1 December 1954 for 

full implementation of new Appendix "B", including new code words. If a 

general code word change is not agreed we could be ready 15 days sooner. 

Enclosure 

a/s 

cc: SUKLO, Washington 

(Signed) 

RUFUS L. TAYLOR 

Captain, U. S. Navy 

Ex.ecutive Secretary, USCIB 

Enclosure 1 with USCIB 13.7/35 dtd 20 Sep 1954. 

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UNITED STATES COMMUNICATIONS INTELLIGENCE BOARD 

WASHINGTON 25, D. C. 

OFFICE OF THE CHAIRMAN GIB # 000246 

16 September 1954 

MEMORANDUM FOR DIRECTOR, COMMUNICATIONS SECURITY, OTT"AWA: 

Subject: Delineation of Categories of COI~INT. 

1. Further to .. t.he provisions of paragraph 11 of Appendix 11B11 to our 

Agreement, the enclosed delineation of categories of COMINT is forwarded. 

2. USCIB appreciates the fact that this initial delineation of 

categories and assignment of CCMINT may not be as specific in all respects 

as may have been originally envisioned. However, it is felt that the 

enclosure reconnnends the most complete delineation practicable at this 

time. EO 3. 3 (hi (2 I 

PL 86-36/50 USC 3605 

3. With respect to.pilra.graph 3b, AnhexlJ:l:'e Bl, of Appendix "B", USCIB 

has designated the Dir,7ctor, NSA, as the agent of ~SCIB to negotiate with 

the Directors / GCHQ o .. · n all matters of categoriz~tiln requJring US/UK agreement and to inf arm the Directors, . _ GCHQ of • 

orized by the U.S. 

4. USCIB would be grateful for an early indication from your Board 

as to whether or not the enclosed listings are an agreeable starting 

point, and if so, what would be a convenient date upon which to make them 

effective. In this connection USCIB would favor a general code word 

change incident to the introduction of categories as the connotation of 

code words to be used with categories will be somewhat more general than 

formerly. If a genera.Ii code word change is agreed, a minimum of six 

weeks lead time in preparation for it would be necessary on the U.S. side. 

5. It is considered that introduct.ion of categories will constitute 

the final step in full implementation of the new Appendix 11B11 and that we 

therefore should regard new Appendix 11B11 in full effect as of whatever 

date we agree on f?r the introduction of categories. 

6. If we could receive by 15 October your notification of approval 

to include a general code word change we could plan on 1 December 1954 for 

full implementation of new Appendix 11B11 , including new code words. If a 

general code word/change is not agreed we could be ready 15 days sooner. 

Enclosure 

a/s 

cc: l._______.t 

(Signed) 

RUFUS L. TAYLOR 

Captain, U. S. Navy 

Executive Secretary, USCIB 

Enclosure 2 with USCIB 13.7/35 dtd 20 Sep 1954. 

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CATEGORIES OF COMINT 

I. CATEGORY I 

A. Assigned -

l. 

2. 

as set forth in subparagraph 2a, Anne:x:ura Bl, Revised 

Appendix "B", UKUSA Agreement.* 

B. Suitable for Assigninent to Categocy I -

Other plain text, traffic intelligence or crypt intelligence as set forth in paragraph 2, Amlexure Bl, Revised 

Appendix "B11 .* 

II. CATEGORY II 

EQ 3.3(h)(2) 

Pl..:86-36/50 USC 3605 

A. Assigned -

1. I !except that 

speciticaJ.ly assigned to Categories I or llI here:in. 

2. I 

~iri~t~he~-at~t~a-c~he_d,........Ann~e-x--=r-.~~~~~~~~~~----,.......,..~__, 

* To avoid the necessity of extending further the distribution of 

the UKOSA Agreement, the member departments and agem ies or USCIB 

will, where necessary, write into their implementing instructions 

these pertinent portions of Revised Appendix 11B 11 • 

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• 

B. Suitable for assignment to Category II - I 

....,_ ___________________ ,,_ems listed 

in the attached Annex II. 

III. CATEGORY III 

A. All other than 

.from those assigned to Category II or Category I. 

B. Tra.££ic intelligence based in whole or in part on th3 anaJ.ysis 

or use of identifications and other data derived from Category 

III COMINT. 

c. OOMINT based on tra.t'fic obtained from sources classified TOP 

SECRET. 

D. Plain text which is passed on I I circuits 

and is or suoh high intelligence value or sensitivity as to 

require assignment to this category. k ~lain/text or 

this sort shall be assigned to the su catego~ fol'I ~ 

internal plain text which is established under•• sub? ragrap 

E2 below. 

E. Sub-categories of Category III - EO 3.3(h)(2) 

1. l....__ ___ __.l PL 86-36/50 USC 3605 

2. End product based on I .... __ __.lplain text/ as follows: 

a. I ill messages passed on circuits cJntrolled by\the 

c. Messages regardless of origin or destination 

dealing with thel J 

of such high inte1L1gence vaiue or sensiti'Vity aso 

require assi~ent to this sub-category. 

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'fOP SE6RE'.f FRO!ff 

ANNEX I EO 3.3(h)(2) 

PL 86-36/50 USC 3605 

\\ 

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EO 3.3(h)(2) 

ANNEX II PL 86-36/50 USC 3605 

'f'OP SECRET FROTH 
TOP ~Efn~Jf;l54 

e e 

' EO 3.3(h)(2) 

PL 86-36/50 USC 3605 

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