ATOMIC RESEARCH INSTITUTE AT SINOP

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00810A007600480009-0
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 3
• Document Creation Date: December 20, 2016
• Document Release Date: November 5, 2007
• Sequence Number: 9
• Publication Date: September 29, 1955
• Content Type: REPORT

,4 Approved For Release 2007/11/05: CIA-RDP80-0081 OA007600480009-0
CLASSIFICATION C-0-N-F-I-D-E-N-T-I-A-L
CENTRAL INTELLIGENC! AVENCY
INFORMATION REPORT
COUNTRY USSR (Black Sea)
SUBJECT Atomic Research Institute at Sinop
PLACE
ACQUIRED
DATE OF
INFO.
u 's SOCCNAIT CONTAINS INTONNATIOR IFtCTt~STIItNATICDAI. Susan
O- Pit UNITED ETAtU. 5IN1N TNN 16NAW89 OF W IM IS. SECTIONS 790
AND 784 OF THE U. S. CODE. AS ANENUES. ~IAIIUtSSION OR U7RL-
ATICN OS ITS CONTENTS W Oq NSC*&PT D7 ?R UNADTRCRRED N
IE ONOWIRfED NT lA* 1NS NRNOO110TION OR iMIf /DEN IS N O Ili DRED.
Attached is a copy
THIS IS UNEVALUATED INFORMATION
forwarded as received.
J.- The Dr. Lehmann referred to is probably Hans kAil Lehmann.
2. Other reports have stated that the bonding agent mentioned in
paragraph 2 is gtu tragacanth.
CLASSIFICATION
NSR8
C -0-N-F-I -D-E -N-T-I -A-L
DISTRIBUTION
r CCT
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REPORT
CD NO.
DATE DISTR. 29 ; eptee.1
110. OF PAGES 3
tO.OF ENCLS.
LISTED Bti1QWA
AEFERRNCESs
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CLASSIFICATION
COUNTRY _
TOPIC
c1;u?m1c,.:ent3rj Information on iinop Atomic Institute
EVALUATION
DATE OF CONTENT
DATE OBTAINED
REFERENCES
PAGES 2. ENCLOSURES (NO. & TYPE)__,_
REMARKS
This is UNEVALUATED
Information
16 June 1955
i;:anuiacture of crucJ.oies.
1. Thorium oxide (ThO2), a greyish-white powder was mixed with 96 percent
alcohol and filled b hand into c; Tinders 25 mm long and 10 mm in diameter.
In these molds the mass was air-dried for 24 hours and subsequently
charged into a heavy-'duty furnace which, over a'period of 6 hours, was
gradually heated to 1,000 degrees centigrade. This temperature was
maintained for 60 minutes, the.. the heating was switched off and the
Molds remained in the furnace for an(:tber 24 ~'iours for cooling. The
mace was then charged for 3 hours into a high-vacuum sintering furnace
brought to a temperature of 2,000 degrees centigrade within a period
of 30 minutes.
2. After the sinterin.;! process, the mass was left for cooling in the
high-vacuum furnace for an undetermined period of time. It was then
mixed with a bonding agent called Aga-Aga (some type of wood resin)
and subsequently groun i in a steel bawl mill for 48 hours. A quantity
of 2 kg of Aga-AGa was said to be added to each filling of the mill.
The pro,.)ortion of the mixture is unknown. The resulting mass was
pressed into crucibles by a 5--ton press. 25X1
t? anufacture of insultiz; tubes.
Beryllium oxide was pressed by hand into tubes 200 mm, 300 u.n and
500 mm lon After air-drying, the tub s were broken into 50-mm long
pieces which were consecutively annealed, air-cooled and sintered.
After renewed cooling, the tubes were broken down to 3-5 ma lengths.
Their diameter was also 3-5 mm. The pieces, the so-called "insulating
pearls" were strung on tungsten wire and wore used for the insulating
CLASSIFICATION C+ N IDEP IAL
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PLACE OBTAINED___J
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CONH'IDE. I.AL
of electrically heated resistors. In earlier experiments, thorium
oxide had been used for the manufacture of these "insulating pearls"
but it was soon replaced by berylliu.i oxide, and eventually the
use of thorium oxide was resumed. initial experiments with aluminum
ended in failure since aluminum did not stand the severe temperatures.
4,, -7hile rejects of the tube manufacture were recovered, discarded
"insulating pearls" were thrown out to the refuse dump. They were
not destroyed. "Insulating pearls" became unserviceable as soon as
they showed signs of rea.c tion. The quantity of insulating pearls
produced was determined by the institute's current requirements.
Approved For Release 2007/11/05: CIA-RDP80-0081OA007600480009-0