CONSTRUCTION OF DAM AND POWER STATION NEAR DOBSINA

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00810A006200610008-1
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 5
• Document Creation Date: December 21, 2016
• Document Release Date: August 6, 2008
• Sequence Number: 8
• Publication Date: April 8, 1955
• Content Type: REPORT

Approved For Release 2008/08/06: CIA-RDP80-0081 OA006200610008-1
dOm QEpOQ`
CENTRAL, INTELLIGENCE
Construction of Dam and Power
Station near fobsinm;
M H aC pOo Qir
This material contains information affecting the National Defense of the United States within the meaning of the Espionage Laws, Title
18, U.S.C. Secs. 793 and 794, the transmission or revelation of which in any manner to an unauthorized person is prohibited by law.
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COUNTRY Czechoslovakia
DATE OF INFO.
PLACE ACQUIRED
DATE ACQUIRED
GENCY
8 April 1955
NO. OF PAGES 5
REQUIREMENT NO. RD
REFERENCES
SOURCE EVALUATIONS ARE DEFINITIVE. APPRAISAL OF CONTENT IS TENTATIVE.
1. A dam and power project is located about four kilometers north
of Dobsins. (N 48/49, E 20-22), near the village of Dedinky, which will
be partially flooded by the newly formed lake. It is close to the
,ystrica r,ai oadb
Mssgecany=Cervena Skala-Banska ~
2. In the summer months, the flow of water from t4e Hnilec River into
the main reservoir is very low, When the area is supplied with
current by other power stations, the water from the reservoir at the
power.=station dam is therefore to be pumped back to the main reservoir.
It is not known hot? this is to be-done, 3. The construction is being carried out by Hydrostav, National Enterprise,
Bratislava. The construction was begun sometime in 1949 and was to have
been finished sometime in 1952., but has been held.up by.a shortage of
labor. Because of this the gum allowed for the construction has long
been spent and new funds have to be granted. At this rate the project
will perhaps be finished by 6, in spite of the fact that work has
been largely mechanized. The turbines for the power station have been
su lied
~~ Cement is brought from Lietavska Lucka by rail. The origin
of the iron material being used is not known. Stone comes from the
quarry made by blasting the hillside for the small stretch of railroad
line which is being relaid by 'Dystavba Rudnych Bani (VP- __~~i'ioe
Development) in the dam area, Two inspectors from the CSD (Czechoslo-
vak State Railroads) in Kosice are in charge of this construction.
4. About 600 persons are working on construction of the dam, of whom 400
are permanent employees and 200 are brigade workers, such as students
who come for one month and employees of other enterprises who come for
two or three months. There are about 40 women, most of- them in'the
offices.. The majority of the permanent workers are former tradesmen,
independent farmers (kulaks), and craftsmen., who were sent to the
construction by the Labor Exchange after being deprived of their property.
A 48-hour week is worked.,, with three.shifts.
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5. Management:
a. Sleza one of the managers at the construction of the Orava
Dam.
b. Pnainaar in nhsirrte of mechanizing the coristruction- Josef Jancek,,
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rhi?Pf of eonstruction of the lower part of the dams Eng,. Ve,ji (fnu),
gout of constriietion (wee attaeheed .skketch N,o., 1):
1., Dam,, near the hamlet of Dedinky.
2. Probab3o,.extent of lake, when completely flooded.,
3. Railroad line,,,, new stretch on a raised eixibankment,
~+. Tunnel-, for taking water to the power station.
5. Auxiliary pumping station at about the middle of the tunnel.
6. Bu ldirg containing turbines and dynamos.,
7. switctju* station
8. Small auxiliary dam, through which water drains off into.Dobsina brook.,
9. Channel to drain water from the small dam into the brook.
Description of construction ~1,4@ sketch No. 2):
1. Part of constructiso not yet completed, where the dam has to be sunk
into the bank;. So far it has only been dug out, and concreting of the
bottom has begun..
2. Portion of dam already completed with concrete blocks rising to the
full height of the dam.
3. Block concreted to Drily half the height of the dami 4. auildi'ng site where faundations are now being prepared for concreting.
The whole dam (Nos. 1-4)- is about 120 m~ ;long. At the base,, `.it is 10
m, wide,, and at the top. about 4 m. The height will be about 15 m.,? and
it is to extend about 2 m., above the surface.
5. Old railroad line,; which will be flooded when the construction is com-
expert on geological niechanic,s, was in charge of the construction of this
filtering em)ankment.
pieted,.
New railroad line,. now under c action. The new section will be
about three .kilometers lang. The upper surface of the new railroad
embankment will have space for a doable track. It is about five to
six meters above the level of the old one,.
Special embankment' for the new railroad line, made of crushed rocky
to enable water from the reservoir to, seep through. This water will
form another small lake on the southwest side of the dam._ The whole
embankment is about 300 in. long;. The water is to seep through about
150 m. Prof. Jalovec of the' Prague Technical Building Colleges an
8. Boundary of the artificial la"ke
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3.
8a, Limit which the water has, already reached.. Tho vemainder of the water
is partly let out through the dam construction, sites and partly pumped
up. by the turbines.
Pumping station and arrangements for shutting off the 4ay. into. the
canal. This is a faro-concrete construction 3.0 x 5 mo and 7 I no
and is the main pumping station which.,suupplies,water. to.the canal
leading to the power station. The apparatus is probably of Czech
Origin*
9a. Canals, real,. rtkroough which waterr is brought from the ,lake
at the dam to ., the p ion, about four kilometers away (face
distance),' disaster about 220 cm. It is not known of what material
the walls are made. About fl&U the tunnel runs horizontally, the
next part is slightly inclined and-the last part drops .considerably
so as to speed up the. flow of water. The gradients ,ere not known.
10.. Power station with two turbines.., Nundber of dynamos not known.
,:. Building is concrete, 40 x .20 m.y. 10 m. high.,
:11. Switching station. A..concrete building, 30 x 20 ma k 10 a. .high.
OOnt,the south side of the. building is a space with pylons.
12.. Embankment for holding water after it leaves the turbine.. About
80 m, long the base' 10 mi. wide,, and' the top 5 m. Height about 15 Z.
13. Small lake formed' by the dam., about 200 m. long and 150 nt, wide.
lk. Canal from the lake to Dobsina brook..
15. New road still under constructiono, on hilly',ground., 'The old road
is to be flooded.
16. Railroad bridge over the newroadt Iron, about 14 m...longj on cone
Crete bases O, the aides: of the road.,
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Sketch NO .l.
Dam and Purer Statjaa near.Ddbsina
Bede 1;75,000
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Sketch No. 2
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Dam and Power Station near Dobsina
Not to scale
Approved For Release 2008/08/06: CIA-RDP80-0081 OA006200610008-1