CONSTRUCTION OF A TUNNEL OR AIR RAID SHELTERS AROUND SOFIA

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00810A006900140007-7
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 2
• Document Creation Date: December 21, 2016
• Document Release Date: March 6, 2008
• Sequence Number: 7
• Publication Date: May 19, 1955
• Content Type: REPORT

Approved For Release 2008/03/06: CIA-RDP80-00810A006900140007-7
CENTRAL INTELLIGENCE AGENCY
This material contains Information affecting the National Defense of the United States within the meaning of the Bapionage Laws, Title
18, U.S.C. Secs. 793 and 794, the transmission or revelation of which In any manner to an unauthorised person Is prohibited by law.
S-E-C R-E-T
COUNTRY Bulgaria
DATE OF INFO.
PLACE ACQUIRED
DATE ACQUIRED
Construction oPcsi Tunnil or
Air Raid Shelters around Sofia
REPORT
DATE DISTR.
NO. OF PAGES
REQUIREMENT NO.
REFERENCES
19 May 1955
2
RD
1. In 1953 the plan for an underground passage around Sofia was completed., and
exc4'vation was initiated in 1954. Construction work is the responsibility
of the Inzhestrvy (Ingenerno Stroitelstvo) section of the Ministry of Con-
struction. The unit actually concerned with construction on the spot is
called Department No. 27-
2. There are several sites where construction is already underway, usually with
one entrance each to the tunnel. Thj sites are fenced in and are usually
located between military barracks. The following .it.. are known:
a. in taw vicinity of the 'asno solo quarter of Sofia, approximately one
kilometer from the prison for juvenile delinquents; the site has
Project Number 302, and the entrance to"the tunnel bears the same numbers
Dimitfilr Angelov is the engineer in charge;
b. In the vicinity of the Tukhlarska quarter of Sofia;
c. In the vicinity of the Poduene railroad station; and
d. In the vicinity of the Seminariya.
3. The tunnel is four meters wide, four meters high, and lies 25 to 30 meters
under ground level. The walls and ceiling are of concrete. The wooden
forms used for pouring the concrete have been left imbedded in the concrete.
A steep, winding stairway leads into the tunnel, each step being 0.8 meters
wide and 0.3 meters broad.
Workers employed on the project must sign a declaration that they will guard
the state secrets,, that they are aware of the secret nature of their work,
and that they are liable to punishment under'the penal code for divulging
any information on their work. While much of the construction work is being
STATE X ARMY V X NAVY
AIR FBI AEC
(Note. Washington distribution Indicated by "X"; Field distribution by "#") I
Approved For Release 2008/03/06: CIA-RDP80-00810A006900140007-7
 Approved For Release 2008/03/06: CIA-RDP80-0081 OA006900140007-7
done by soldiers, unemployed Party members have recently been employed.
5.
soldiers and civilian workers are pouring
25X1
25X1
concrete at the site described in Paragraph 2 a, bu the site at
approximately 100 meters from the streetcar line to Knyazhevo. Concrete is
being poured into a narrow excavation approximately 250 meters long.
the work is connected with air raid shelters,
not with a continuous tunnel around Sofia.
25X1
25X1
Approved For Release 2008/03/06: CIA-RDP80-0081 OA006900140007-7