AIRFIELDS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP82-00457R010900280002-3
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 3
• Document Creation Date: December 19, 2016
• Document Release Date: March 1, 2006
• Sequence Number: 2
• Publication Date: March 11, 1952
• Content Type: REPORT

- TTU.OF
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` 31- IAA
FEB 192
CLASSIFICATIO ;v` ~ ONTROL - 'U.S. OFFICIALS ONLY
`~ SECURITY INFORMATION
GQ INFORMATION REPORT
REPORT
CD NO.
COUNTRY Bulgaria
SUBJECT Airfields
DATE OF
INFO.
PLACE
ACQUIRED
DO NOT G-EMU! ATL
YATE DISTR.
NO. OF PAGES
NO. OF ENCLS.
(LISTED BELOW)
111 Mar. 1952
SUPPLEMENT TO
REPORT NO.
Approved For Release 2006/03/18: CIA-RDP82-00457R010900'18000 -
THIS DOCUMENT CONTAINS INFORMATION AFFECTING THE NATIONAL DEFENSE
OF THE UNITED STATES, WITHIN THE MEANING OF TITLE 18, SECTIONS 793
AND 794 OF THE U.S. CODE, AS AMENDED. ITS TRANSMISSION OR REVE-
LATION OF ITS CONTENTS TO OR RECEIPT BY AN UNAUTHORIZED PERSON IS
PROHIBITED BY LAW. THE REPRODUCTION OF THIS FORM IS PROHIBITED.
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THIS IS UNEVALUATED INFORMATION
There were 20 to 30 planes of unspecified toes based at the Karlovo
airfield. Between 8 July and 21 July 1951 120 old
German type., single and twin.-engine planes flying daily between
Karlovoa Krumovo and Plovdiv.
2. There is an airplane repair depot'- employing 19500 workers and a
large number of Soviet technicianss located near the Karlovo field.
3. An airfield is located at Marino~PolIs village (QX..2628)
approximately eight kilometers southeast of Karlovo. I
20 four-engine lanes wit out propellers
had landed at Marino-Pole the day before.
hese were jet planes, but co not furnish any
of ormation regarding their origin or reason for landing at the
field; however, while ssing the Graf-Ignatiev airfield
observed four planes which appeared be
covered with-oil cloth..
lth-cmh were Soviet jet planes and
that
their main base was the Krumovo airfield.
RETOR 9 BB RECORBS RENTER
-~-c.9E6~ ~ELy AE7ER USE
JOB ~3~~ BO
3VV7
Comment- Grid location is for the AMS M506 lo25Oy000 Map
STATE
ARMY
DISTRIBUTION
T-F
Approved For Release 2006/03/18 : CIA-RDP82-00457RO10900280002-3
Document No.
No Change In Class.
E] Declassified
Class. Changed TO: TS S C 25X1
Auth.: HR 70-2
Date: B
/CONTROL - U.S. OFFICIALS ONLY
 Approved For Release 2006/03/18 : CIA-RDP82-00457RO10900280002-3
rVNM NV. 51-4Aa
FED 1952
~~CFyNTRAL INTELLIGENCE AGENCY
,)' CCONTROL - U.S. OFFICIALS ONLY
SECURITY INFORMATION
INFORMATION REPORT REPORT
Irk ? a bur U a." N ..~ -
R9 COUNTRY Bulgaria NOT CIRCI LATE
SUBJECT 1. . Bulgarian Bulgarian Transpo ervice
2. Arms and Ammunition Factory at Sopot
3. Kar?lovo-Sofia Railroad Construction
.
DATE OF
INFO (LISTED BELOW)
.
PLACE
ACQUIRED
THIS DOCUMENT CONTAINS INFORMATION AFFECTING THE NATIONAL DEFENSE
OF THE UNITED STATES, WITHIN THE MEANING OF TITLE 18, SECTIONS 793
ION OR REVE-
AND 794, OF THE U.S. CODE, AS AMENDED. ITS TRANSMISS
LATION OF ITS CONTENTS TO OR RECEIPT BY AN UNAUTHORIZED PERSON IS
PROHIBITED BY LAW. THE REPRODUCTION OF THIS FORM 15 PROHIBITED.
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NO.
DATE DISTR.
l1 Mar. 1952
NO. OF PAGES
2
OF ENCLS.
NO
SUPPLEMENT TO
REPORT NO.
THIS IS UNEVALUATED INFORMATION
1. The Bulgarian transport service was using trucks of the following typess
a. Old Gem an Opel..Blitz trucks $'
be Soviet M-105 3.-ton ZIS trucks,
c. Soviet M-110 *ten ZIS tracks; an,
0.cumeut We. -------------------
go Change In New 0
El Declassified
Ctass. Changed To: 1S t C 25X1
Muth.: !1R 70-2
Date: i,
2. The ZIS trucks were very inefficient because of their great gas con-
sumption, Since the government allocates only '100 liters of gas per
vehicle each month$ the ZIS trucks have been unusable after the fifteenth
or wen Beth of each month. To compensate for the lack of gas., the
government is refitting the trucks with wood burners.
3. Military Vactory Group No. 11 is located in the western section of Sopot.
The factories in the group, exact number unknown employ 5,500 workers
and are operating on three ' shifts a day. The group produces rifles,
7.65 (sic) cal ,ber pistols$ and various types of hand grenades and
ammunition.
d. Soviet M-15? 5-ton ZIS trucks.
Most of the workers are quartered in surrounding villages and are
documented for entry into the factory area.
The factory group is under strong military guard and entirely enclosed
by a barbed wire entanglement two and one-half meters high. There are
three or four antiaircraft g` emplacements on the western boundary of
the factory. group.
/CONTROL - U.S. OFFICIALS ONLY
NSRB SRB
Approved For Release 2006/03/18 : CIA-RDP82-00457RO10900280002-3
 NTROL U.S. OFFICIAL ONLY
6. There are. eight tunnels along the Karlovo-Sofia rail artery, as
follows s
a. The first tunnel, approximately 1,200 meters long, is located.
west of K3-1. a and has been completed;
b. The second or Zl idol tunnels appro-vd ately i,400 meters long,
has been completed;
c, The third, tunnel, approximately 600 meters long, has been com-
pleted
The fourth t-. nnel, approximately 840 meters long, has been coma
pleted;
e. The fifth tunnel, approximately 340 meters long, has, been com-
pleted.;
Approved For Release 2006/03/18 : CIA-RDP82-00457RO10900280002-3
CENTRPI, ITITELLIGENCE AGENCY
g. The seventh or Xozni..tsa doable-track t~.nnela approd.mately 5, O0
meters' long; located between Pir?dop and Kl satz was the only
unfinished 6eotion of the .entire rail artery; approximately
2,500: tr dovaks and 500 ci$ il,.iari Iiborek6- were working in three
shifts to complete the levelling and laying of tracks; and
The sixth- t nel, appro t,611 ? 1,370 meters long, located just
out of Klisura, has been completed;
The e'ig ? h t el, approximately 1,-860 meters long, located
seven or eight kilometers east of Makotsevo (XL-7359), has been
completed.
25X1 Commenl;o Grid locati:.ons are for the S M506 10250,000 Map
er?ies. .,_
25X1 I. Comnuent- Subsegaent overt informatiofl indicates that
e : enti re line wawas completed. on 17 Decembe ? 1953, the masonry
work on the Kozriitsa tuyr ie1 havirig b' e6ri eoin.Pleted on 3,3 November
1951 and the track laying on 2 December l95l.
CPET/GONTROL -'U. S. Orly IC IA.I ONLY
Approved For Release 2006/03/18 : CIA-RDP82-00457RO10900280002-3