ZLETOVO LEAD AND ZINC MINE

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP82-00457R006200760009-5
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 3
• Document Creation Date: December 14, 2016
• Document Release Date: January 24, 2001
• Sequence Number: 9
• Publication Date: November 24, 1950
• Content Type: REPORT

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CLASSIFICAT;0I: T/C:iNTROL - IT OFFICIALS ONLY
Approved For Reqrn-
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SUBJECT Zletovo Lead and Zinc Mine
?5X1A
PLACE
ACQUIRED
E PO RT CO NO.
DATE DISTR. 24 NOV 50
NO. OF PAGES 3
NO. OF ENCLS. 1 sketch
(LISTED BELOW)
2Z5M OF
SUPPLEMENT TO
1. The Zletavo lead and zinc mine is situated on the Stalkovska Reka River,
approximately two kilometers southeast of the village of Zletovo, and is
connected by a road with the railroad station at Vance Pirka. The ad-
ministration offices, separation plant, workshops and the garage are
situated at the junction of the Zletovo and Rudare roads.
2. The mine is administered by a director who is subordinate to the Directorate
of Colored Metals of the Serbian Republic in Belgrade. Each department is
headed by a director, except the technical department, whose head is a
chief engineer.
3. The total output of ore in 1949 was 139,000 tons and the planned pro-
duction for 1950 is 170,000 tons. The present daily output varies between
500 and 550 tons. At this rate, the 1950 norm should be exceeded by about
4,000 tons. Further increase would only be possible by supplying the mine
with additional equipment.
4. The processed ore is transported to the railroad station at Vance Pirko:.
From there the concentrate of lead is sent to the Trepca plant at Zvecan.
Zinc and pyrites are exported mostly to Italy, Germany and Austria.
5? Ore d2posits:
a. Quantitz
Category Al 1,200,000
Category B1 250,000
Category C3 600,000
ESTATE
ARMY
tons
tons
tons
b. Metallic content: The average mean con
Lead :
Zinc
Silver:
2 percent
6 percent
60 grams per ton
Document No.
No 'Change In Class. Ej
ri Declassified
Class. Changed To: TS S
Auth.: Hf1,411-24 2
Date;
lip
The content decreases as the depth increases.
w'r
0. The vein was originally formed by the eruption of Trachyte and sediments;
NMN
MR
CLASSIFICATION
NSRB
FBI
SEC
icourRoL
S, OFFICIALS ONIY
R
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owing to silification, the ore is extremely hard. The sediments
consist of Galenite (PoS), Sfalerite (ZuS), Wurzite (PoCuStS),
pyrites, boulangerite, jamesonits, marthite, chalko-pyrites,
argentite and tetrahedrite.
7. Factors limitingl
a. Lack of mining equipment such as drills, rails, steel, iron et cetera.
b. Lack of manpower.
c. Work could be speeded up by using the top slicing method, instead
of the cut and fill method used at present.
1) The mine was opened by a shaft, from which three cross-cuts
radiate. The actual mining. Of the ore is done in horizontal
workings, which descend fifty)neters below each other. These
are connected. by diagonal, cute which run from the shaft to the
workings, situated In all Sections of the horizontal cuts, and
are used for communications land transport.
Mining is done from below, by the cut and fill method. The filling
is taken from the open cast workings, sent down towards the
horizontal workings and distributed by the miners to build up the
veins.
3) Ore is loaded by hand into oars Which take it to the chutes.
Here it is loaded onto trucks, which are pilled towards the shaft
by a locomotive. It is here raised to the next diagonal out, and
so to the surface. It is then taken to the bunker, of 1,000 ton
capacity, from where it is sent by the overhead cable railway to
the separation plant. fiere itis crushed, separated, and then
sent to the flotation plant, where the lead, zing and pyrites are.
extracted.
8. There are no developments planned within the foreseeable future.-,
9. The mine power station is situated near the Directorate on the Zletovska
River. Aatdr? supply is constant. The following power unite have been
installed:
a. A steam turbine of Germania make of 1,200 CV coupled with an alternator
of 750 kilowatts..
b. A steam engine of 750 CV coupled with an alternator of 500 kilowatts,
kept in reserve.
The two generators produce an alternating current of 3,000 volts/50 cycles
which is transformed to 1,000 volts. Upon reaching the mine it is re..
duced to 400 volts for driving the electric motors. The two copper boilers
are of Steilrahrkessel manufacture with a capacity-of 200 square meters
beat surface. Both burn lignite which is apparently imported from the
Kosovo mine.
10. ilachind_a_V_Pja_,ent
a. Drills: There are 120 to 150 drills, weighing 60 to 90 kilograms
each, mounted on columns or on tripods, mostly of Boehler, Sullivan,
Ingersoll Rand and Russian manufacture. The' majority are in such
poor condition that only or 50 are in use. In addition there are
some lighter type drills of Flottmaan and Haman manufacture.
b. Hoists: There are about ten electric hoists of American and Yugoslav
manufacture, Near the shaft is an electrically driven leinding machine
of 600 to 700 CV, operating to a depth of 150 meters.
C. Transport: There are four. Diesel locomotivep ef 12 to 15 horsepower
with.a.capacity of five tons. All are of Algoalav origin and well-worn.
About 300-smn17 ears o000 kilograms and 50 tip cars are used in'the
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workings, all in poor condition. Twelve trucks of Skoda, Fiat,
Federal and Mann manufacture, plus five or six ears are held by the
mine.
d. Pumps: The pump station is situated in the shaft on the third
horizontal working. There are six centrifugal electric pumps of
between 500 and 1,000 cubic meters per minute. These are of Yugoslav
and Hungarian origin.
e. The crushing plant is equipped with two conical breakers and three
jaw crushers.
f. The flotation plant is equipped with three batteries of flotators,
filters and reservoirs.
a Compressors: There are five electric compressors of Magdeburg-Usch
and Chicago Pneumatic make, with a capacity of 90 cubic meters per
minute.
h. Workshop: The workshop is well equipped with mechanical and
electrical repair equipment, turning lathes, et cetera. There is
also a forge and a carpenters' workshop.
U. The total number of mine employees is approximately 4,125, including
325 women. This number is divided as follows:
Administration 225, including 25 women
Miners and mine workers: 3,500 including 300 women
Forced labor
400
12. The mine and separation plant work three 6-hour shifts per day. On the
first shift there are usually 1,800 workers and 850 workers on each of
the other two. The remainder of the employees work one or two shifts
per day. Salaries are calculated each day and the worker is told each
day the amount he earned on the preceding day.
13. The forced laborers are serving sentences of one year, mostly for political
reasons. They live in Rudare and are escorted to and from the mine by
the Militia.
114,,
The State Untie in the village of Zletovo is about 15 men strong, while
the Mine Militia consists of 35 men. All the mine buildings are strictly
guarded by the Mine Militia. In addition, the State Militia patrol the
reads, and .ine Militia posts in Zletovo. The railroad is guarded by
100.1 units who also assist the UDB detachment. All workers are issued a
pass by the Administrative department of the mine.
15. I....essacl
1 - Power plant
2 - Transformer
3 - Stores
4 - Garage
5 - Workshop
6 - Flotation plant
7 - Directorate office
8 - Militia station
9 - Crushing plant
10 - Bunker
11 - Mess
12 - Filling shafts
13 - Hoist
14 - Workshop
15 - Bunker
16 - Transformer
17 - Mine office
16 - Bath house
19 - Explosives store
20 - Ventilator
21 - Workers, mess
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