DAM AT PETROKHANSKI PASS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP82-00457R008500570013-6
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 2
• Document Creation Date: December 22, 2016
• Document Release Date: February 8, 2011
• Sequence Number: 13
• Publication Date: September 6, 1951
• Content Type: REPORT

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Sanitized Copy Approved for Release 2011/02/08: CIA-RDP82-00457R008500570013-6
CLASSIFICATION CO! FID: ~3TT AL/C .j'.`"A`c '.)L U.S. 0i F'161 LS uiaLY
R
CENTRAL INTELLIGENCE AGENCY REPO
INFORMATION co REPORT No.
50X1-HUM
COUNTRY Bulgaria
SUBJECT Dam at Petrokhanski Pass
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DATE DISTR.
6 Sept. 195.
NO. OF PAGES
NO. OF ENCLS.
50X1-HUM
(LISTED C3ELOW)
SUPPLEMENT TO
REPORT NO.
"Iqo
THIS IS UNEVALUATED INFORMATION
lo, In 1946 construction of a dam and hydroelectric plant was begun on the
Nishava River at Petrokhansk . (Y4.F 2210). In 1946 there were about 1,000
Trudovaaks and 300 paid laborers working on the project. At the beginning
of 1950 there were 800 Trudovaks and 800 paid workers at the project. During
the latter part of the year the Trudovaks left and volunteer brigades were
expected. In 1949 the dawn was near completion, but Soviet engineers later
decided that part of the wall was poorly constructed and should be done over.
T.bout the same tine., the director of the project,, Lukov,s fled to Yugoslavia
with all the plans. In 1949 the construction of the hydroelectric plant
had not begun.
2. The dam had a pentagon or hexagon shape (sic) with diagonals about 180
meters in length and eight to ten meters high.
dam had a capacity of 250.,000 cubic feet. In N
the foundations of the dam had been constructed and hpd the following
dimensionss
a. From the bottom of one mountain to the bottom of another-150 meters.
1.!'. Width along the bed of the river-'-300 meters.
c. Depth of foundations-20 to 35 meters.
hen the darn is completed the walls will be 180 meters high. The length of
the top will be 500 to 600 meters, The following; equipment was used at the
dams
a. Four machines :rl,ich were used to load earth on 60 to 70 wagons.
b. One steam engine with 20 wagons.
co Three excavators, Baker type, 45 tons*
d. One large water pump.
e. Fifteen trucks.
4o The workers worked in three shifts (presumably in early 1950); two of the
shifts were nine hours and the third was six hours. The project is supposed
to be completed in 1953, but the workers estimated that it would not be
finished until 7958.
5. There was a dam under construction on the Topolns.tsa River west of the
village of Muhovo ON 8935),- other dams were being constructed at
CLASSIFICATION GMT, 17.!TTTPhi,/CONTROI. - TI-S. O1!F.CCTAL ONLY
[] DaclassIfIed,
Class. Changed To, TS S r?
Sanitized Copy Approved for Release 2011/02/08: CIA-RDP82-00457R008500570013-6
 Sanitized Copy Approved for Release 2011/02/08: CIA-RDP82-00457R008500570013-6
CONFIDENTIAI./tONTROL - U.S. OFFICIALS ONLY
CENTRAL. INTELLIGENCE AGENCY
2
Rositsa, Tasboas (sic), and Koprinka (aic)o
In 1949 @ 1950 an irrigation ditch was opened.-about 200 meters east of Belene
(XG 8859) for the irrigation of the area of Belene and Svishtovo The bottom
of this main ditch was two meters wide, the surface was eight meters wide,
and the depth was two meterao The ditch began at Belene, went through the
village of Dikov, and ended on the Danube near Sviehtov. Many secondary
ditches have been opened along the length of the main ditch; the secondary
ditches were, o5 meters wide at the bottom, 2.4 meters wide at the surface, and
.6 meters deep. A pumping station was being constructed east of Belene to
pump the water from the Danube into the ditch. 50X1-HUM
In 1949, 3,000 Trudovaks, 18000 paid laborers
were` working on the'projecto On 25 M$y 1951 the ditch was completed, and
a Trudovak battalion went to Tutrakan (Xi 0899) to complete the irrigation
projects there; the areas of Tutrakan,, Breelen (XH 8993)9 Golemo Vranovo
(I[i 8789) were going to be irrigated. There were 1,200 Trudovaks and 300
volunteers working at Tutrakan.
CONFIDENTIAL/CONTROL - U.S. OFFICIALS ONLY
Sanitized Copy Approved for Release 2011/02/08: CIA-RDP82-00457R008500570013-6