OPERATION 'DRAGON RETURN' - DIPL ING WALTER DIRBACH

Document Type: 
Collection: 
Document Number (FOIA) /ESDN (CREST): 
CIA-RDP80-00809A000500760053-7
Release Decision: 
RIPPUB
Original Classification: 
S
Document Page Count: 
3
Document Creation Date: 
December 16, 2016
Document Release Date: 
September 3, 2003
Sequence Number: 
53
Case Number: 
Publication Date: 
April 30, 1952
Content Type: 
REPORT
File: 
AttachmentSize
PDF icon CIA-RDP80-00809A000500760053-7.pdf83.55 KB
Body: 
Approved For Release 2005/06/01 : CIA-RDP80-00809A000500760053-7 Approved For Release 2005/06/01 : CIA-RDP80-00809A000500760053-7 Approved For Release 2005/06/01 : CIA-RDP80-00809A000500760053-7 25X1 25X1 _.j~C a+ETJ Chem ical Com o? ition Type of Glass Maker Si02 Tl.;O &1 2 0 CaO MgO Ba0 PbO ZnO Na20 K20 Lead silicate IB 71.0 - - 6.3 - - 5.3 - 1041 16-7 hr 16 70.0 - - 3.8 - - 0.4 - 11.0' 4.8 VI B 66?0 - 1.0 2.5 - - 4.5 9.0, 7.0 C - 1 Corning 'USA 62.0 - 2.0 - - - 20.5 - 7.7': 6.0 3C-4 (Nr 12) Nii 160 55.0 - 1.7 0.3 - - 30.0 - 3.8 9.2 Dolomitglas Nr82 74.0 - -? 5.8 3.6 - - - 16.6 - Nr71 73.3 - 0.4 5.4 3.9 - - - 17.0 - G-8 Corning j USA 70.8 - 1.6 5.5 3.8 - - - 16.2 0..7 Bari ,glae GA 1 69.4 ?- - 5.5 3.5 54 - - 12.5 4.1 n Nr.:?112 .. 71,5 - - :; j 1.5 7. -- - 10.0 5.5 Nr 23 68.4 2.7 3.9 8.5 - - - - 9.41 7.1 Nr 23 Nil 160 68.39 3.66 3.89 8.5 - - - - 9.4 7.14 Molyrbdaenglao - Nr 46 68.0 17.5 3.0 - - - - 5.0 6.51 - Nr 46 Nii 160 66.75 20.25 3.5 - - - - - 3.91 5.35 " 0-705A3 Corning USA 67.0 22.0 2.0 - - - - - ?5 ? 30-5 68.0 20.0 3.0 - - - - - 4.0 5.0 N4 35 63.0 24.9 1.5 - - - - - 9.1 1.5 NoAea Corning USA 73.0 16.5 - - - - 6.0 - .5 Pyraz Corning USA 80.8 12.0 2.2 0.3 - - - - 4.1 0.1 ENCLOSURE (A) 25X1 Approved For Release 2005/06/01 : CIA-RDP80-00809A000500760053-7 Approved For Release 2005/06/01 : CIA-RDP80-00809A0005007600521 25X1 VACUUM TUBE (LASS USED IN TEE USSR - 1945-50 P aioal Prop wbiea ~p4`of T Temp. Annealing Co-e fie en , Q1FOY Purpose Strain Point Point of Expansion ? . 25.1013 17 - 109 at -107 B Rx and Tx valvec 510-530 87-90 25-100?C Zr 16 Tubeft rods, lamp - ? . pinohea 460 490-510 67 90 23-100 C IT 8 Tubes., pinohoe/base for 8x valves 450 480-500 87-90 25-100?C 425 92 25-325?c 3C-4 425 475-490 85-89 0-310?c :J r 82 Lamp and Rx valve 2 00 envelopes 500 520-550 88-92 5-1 ?C 7?; :.-~ ^ ^ 500 510-530 87-90 25-100?C Glass tube for but- 510-540 86-90 25-100?C "ton bases, lamps and small valves ? Nr .112 510-550 87-90 25-100 C x.tg Envelopes and tubes for".Tx, 1C=Tay and 0the5c''larger valves 530 570-590 84-87 25-100?C hr 46. 550 580-600 46-48 25-1000C 3-1C:.-5 515 560-570 48-50 25-100?C Nr 35, 560-580 52-56 25-100?C 792 P 520 580 36 25-325?C pyrex Sinoecopee 560 620 33 25-325?C ENCLOSURE (B) SECRET 25X1 Approved For Release 2005/06/01 : CIA-RDP80-00809A000500760053-7