TNAG-0836-FCO40-1044-Comprehensive-Test-Ban-Treaty-national-seismic-stations-on-U-1979 — Page 30

CONFIDENHOL

HKG-083/1

CONFIDENTIAL

FM FCO 1239147 FEB 79

ROUTINE ST HELENA,

TELEGRAM NUMBER 51 OF 18 FEBRUARY

AVD TO MODUK (DS 11 FOR NORBURY)

No $13/2 Be

AND SAYING TO HAMILTON (PERSONAL), TORTOLA (PERSONAL) GRAND CAYMAN, GRAND TURK (PERSONAL), PORT STANLEY, ANGUILLA

(PERSONAL), MONTSERRAT (PERSOVAL)

INFO SAVING HONG KONG, WELLINGTON (FOR GOVERNOR PITCAIRN), BUENOS AIRES, MASHINGTOT, MOSCOW, PEKING, UKMIS GENEVA (FOR CTB DEL)

PERSONAL FOR GOVERNOR/HM COMMISSIONER

COMPREHENSIVE TEST BAN TREATY (CT3T)

See 12 13 14 15

1. SINCE JULY 1977, WE HAVE BEEN NEGOTIATING WITH THE RUSSIANS AND AMERICANS FOR A MULTILATERAL CT3T THAT WILL BAY ALL NUCLEAR TESTS, INITIALLY FOR 3 YEARS. THE TRIPARTITE NEGOTIATIONS MAY BE COMPLETED IN MID-1979. THE TREATY MAY ENTER INTO FORCE IN 1980. IT WILL APPLY TO THE UK AND DEPENDENT TERRITORIES.

2. AS WELL AS THE MAIN TREATY, THERE WILL BE AN IMPORTANT QUOTE SEPARATE VERIFICATION AGREEMENT UNQUOTE YETWEEN THE UK, THE US AND. SOVIET UNION ABOUT SPECIAL MEASURES

THE TO VERIFY THEIR COMPLIANCE WITH THE TREATY. UNDER THIS, US AND UK REQUIRE THE ESTABLISHMENT OF A VETWORK OF 13 NATIONAL SEISMIC STATIONS (133) 04 SOVIET TERRITORY, RETURN THE RUSSIANS WANT 10 NSS IN THE US (ACCEPTABLE TO THE AMERICANS) AND 10 IN THE UK, OF WHICH 9 WOULD BE IN THE DEPENDENT TERRITORIES, WE ENVISAGE THAT ALL NS WOULD BE INSTALLED WITHIN 2 YEARS OF THE TREATY'S ENTRY INTO FORCE, WE SEE NO VERIFICATION CASE FOR THE SOVIET PROPOSAL FOR WAS IN DEPENDENT TERRITORIES. MINISTERS HAVE

433 DECIDED TO ACCEPT ONLY ONE TAS IN THE UK ITSELF BUT THAT WE SHOULD BE READY TO RECONS10ER IF THE RUSSIANS CAN SHOW GOOD

GROUNDS FOR THEIR PROPOSALS.

3. AFTER EXAMINATION OF POLITICAL, LOGISTIC AND TECHNICAL CONSIDERATIONS, WE HAVE IDENTIFIED THE FOLLOWING TERRITORIES AS POSSIBLE SITES FOR AN 133 IF NUISTERS SHOULD DECIDE LATER

Tro RECONSIDER

CONFIDENTIAL

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