Document Type: 
Document Number (FOIA) /ESDN (CREST): 
Release Decision: 
Original Classification: 
Document Page Count: 
Document Creation Date: 
December 28, 2022
Document Release Date: 
May 14, 2018
Sequence Number: 
Case Number: 
Publication Date: 
July 1, 1974
PDF icon weekly surveyor - joint c[15393254].pdf221.33 KB
Ve: I � crivmr17.1' liff7.4et r 7 pproved for Release: 2018/01/30 C00122631 ?9� 11�1140.- = � -!-Ns.- � r ..-r4 -11!(:�,-"' . . � Weekly Sur.veyor 1 July 1974 1�;�,,rn�,'" -r7r' 71:1,7!IFE �hr esCL; . Frff PR 1995 Approved for Release: 2018/01/30 C00122631 *UM Approved for Release: 2018/01/30 C00122631 WEEKLY SURVEYOR Directorate of Scienc, and Technology 1 July 1971; This publication is intended to furnish the intelligence community with a timely survey of significant current scientific intelligence. The items herein are based on selected incoming reports of all kinds received during the previous week. The com- ments represent the views of the Office of Scientific Intelligence and the Office of Weapons Intelligence and are coordinated to the extent possible in the time available within CIA but, being based on the material at hand, are subject to change on receipt of further information or analysis. We caution against action taken solely on the basis of the preliminary evaluations herein. Substantive questions concern- ing items in this publicatlon,may be addressed directl to the Surveyor Staff, OSI, CIA Headquarters, Langley. Questions concerning dis- tribution should be forwarded,through appropriate departmental channels. CONTENTS � APFPc".'"71 r., r:7 -t 7.4re � 4414k-o� . : 7. ..�4-4. ,e0 � -"" I. .44Art Approved for Release: 2018/01/30 C00122631 Approved for Release: 2018/01/30 C00122631 Joint Chinese-Soviet Weather Modification Project Reported Approved for Release: 2018/01/30 C00122631 Approved for Release: 2018/01/30 C00122631 � Weekly Surveyor 1 July 1974 Joint Chinese-Soviet Weather Modification Pro ect Re orted: t e and the U are currently collabo-. rating in a joint weather modification project. The project which is und wa in the "Great Plains" area includes hail su ression. Comment: This is the most recent indication of direct collaboration between the two countries in meteorology. Soviet hail suppression technology has been exported to several foreign countries during the past few years, pos- sibly including the PRC. It is not clear where the "Great Plains" areas are located, but field operations in the Kansu and Shansi Provinces and Inner Mongolia have been increasing. These operations involve attempts to increase precipitation by cloud seeding and to disperse potential hail clouds using shells fired from cannons and artillery pieces. The latter method is a well-publicized Soviet technique. Similar experiments also have been reported in agricultural areas of Central and Northeast China. A recent Soviet report on meetings held in 1973 in- cluded a reference to Chinese attendance at a Bloc Climato- logical Working Group meeting in Leningrad. Whether the Chinese actually participated or attended only as observers is not known, but this was their first known involvement since the early to mid-1960s. This meeting and the re- ported joint weather modification project imply at . some resumption in loint meteorological activities. 'I PR J95 Aning-1���"' 7 -.7"' 7.171 r:rc;r :wriV, � Approved for Release: 2018/01/30 C00122631