Uksunay gold mine - large-capacity gold mine in chemically weathering crusts with gold resources of 73 tons (Russia, Altai Kray).

2. Well-developed infrastructure of district
Transport accessibility
The Uskunay mine is located in Altai Krai in the
area with the well-developed infrastructure.
It lies 40 km away from Prokopyevsk, a Kuzbass
industrial cluster, and 50 km away from Togul, a
district centre.
Geographical coordinates of end points of the
area:
53о 36’21” nl, 86o 07’09” el
53o 40’ 43”nl, 86o 15’ 54” el
53o 38’ 05” nl, 86o 20’ 09” el
53o 34’ 08” nl, 86o 10’ 59” el
The geologic allotment is 81 km2.

3. The mine lies in Salair, which historically has been an
area of gold mining. This is the place where the first mint
for making golden and silver coins was built in the middle
of 18 century. Almost all Salair rivers are rich with native
gold which has been mined until present. The source of
native gold is primary lode deposit gold and gold from
weathering crusts, possessing reserves of hundred
thousand tons.

4. The results of chemical analyzes and assay of the Uksunay mine ore
Compounds
and
elements
Content, %
Compounds
and
elements
Content, %
SiO2 55,48 Sgen 0,07
Al2O3 16,94 Ssulph 0,03
Fe 10,13 Сgen 0,14
P2O5 0,24 Corg <0,01
CaO 0,98 Zn 0,016
TiO2 0,94 Pb <0,01
MnO 0,34 Cu 0,014
MgO 1,97 Au, g/t 2,48
As <0,01 Ag, g/t 5,0
Element Content of element, g/t Element Content of element, g/t
Li
Be
B
Na
Mg
Al
Si
K
Ca
Sc
Ti
V
Cr
Mn
Fe
Co
Ni
Cu
Zn
Ga
Ge
As
4,75
0,23
9,74
5843,95
7903,67
39709,06
57186,93
8867,18
5480,57
53,43
1760,71
182,55
81,31
1342,20
51669,93
30,54
69,00
92,88
83,69
18,51
1,30
255,35
In
Sn
Sb
Te
I
Cs
Ba
La
Ce
Pr
Nb
Sm
Eu
Gd
Tb
Dy
Ho
Er
Tm
Yb
Lu
Hf
0,11
1,27
2,76
0,08
0,48
0,41
192,13
3,51
10,88
1,54
6,15
1,37
0,40
1,16
0,15
0,87
0,14
0,40
0,06
0,54
0,07
0,80
Se
Br
Rb
Sr
Y
Zr
Nb
Mo
Cd
2,44
71,65
13,69
82,50
6,59
46,70
1,39
0,00
0,13
Ta
W
Re
Hg
TI
Pb
Bi
Th
U
0,07
4,19
0,00
0,27
0,12
6,60
0,04
2,00
0,66
Size classes,
mm
Yield,
%
Content Au,
g/t
Distribution
Au, %
-1+0,5 20,9 3,28 30,6
-0,5+0,25 19,0 2,86 24,3
-0,25+0,1 11,9 4,82 25,6
-0,1+0,071 4,4 3,67 7,2
-0,071+0,04 9,0 1,72 6,9
-0,04 34,8 0,35 5,4
Total 100,00 2,24 100
Gold distribution for classes

5. Forms of gold in the ore
and the nature of their
connection with its main
components
Content Au,
g/t
Distribution Au,
%
Free gold (amalgamated) 2,84 89,88
Gold open splices
(cyanidationed)
0,10 3,16
Enclosed in the acid-soluble
minerals and under the film
0,09 2,85
Enclosed in sulfides 0,00 -
Enclosed in rock-forming
minerals
0,13 4,11
Total: initial ore (according
the balance)
3,16 100
Phase analysis of gold Different sizes of the Uksunay mine gold
Cloddy,
plate-type gold
Baculiform gold
General form of
fine gold

6. Results of gravity concentration
Product of
gravitation
Product yield,
%
Gold
content, g/t
Gold
recovery, %
Au-head 0,00187 35132,6 29,9
Gravity concentrate 1 0,96 66,12 28,9
Gravity concentrate 2 0,16 282,74 20,6
Combined gravity
concentrate
1,12 97,04 49,4
Total 1,12187 - 79,3
Gravity tailings 98,87813 0,46 20,7
Initital ore 100,00 2,20 100,00
Products of
cyanidation
Gold
content, g/t
Gold recovery, %
Conditions of
cyanidationof
operation
of
ore
Combined gravity concentrate
Resin AM-2B - 95,5 47,2 Sample – 50
g;
ratio Ж:Т=2:1
NaCN – 0,1%;
СаО – 0,02-
0,03%;
loading Resin
AM-2B – 5%;
time – 24
hour.
Cyanidation
tailings
4,36 4,5 2,2
Total
(combined
gravity
concentrate)
97,04 100 49,4
Tailings of 2 stage gravity
Resin AM-2B - 56,5 11,7 Sample – 200
g;
ratio Ж:Т=2:1
NaCN – 0,1%;
СаО – 0,02-
0,03%;
loading Resin
AM-2B – 3%;
time – 24
hour.
Cyanidation
tailings
0,20 43,5 9
Total
(tailings of 2
stage gravity)
0,46 100 20,7
Results of gravity-cyanidationed concentration

7. For the Uskunay orefield (ore shoot 1) gold resources of P2
category are estimated to be 40.7 t, while average content is
0.52 g/t.
For the whole Uskunay plot the gold prognostic resources of
category Р2 are estimated to be 45.9 t, which are contained in
63.6 million tons of ore, where average content is 0.72 g/t.
The Uksunay gold field is classified as a large capacity deposit
with favourable mining and geological conditions allowing
mining gold by means of excavation and avoiding drilling and
blasting. The depth of ore body stoping is down to 30 m,
capping thickness is 5-7 m.
Thus, having such a stoping efficiency of gold mining from the
Uksunay goldfield weathering crusts is highly efficient.
The average cost to produce a gold ounce will not exceed 650
US dollars, which is way below average cost of ounce mining
in the world.
Reserves and resources of this field allow for a construction of
a gold mine producing 1.0 - 2.0 million tons of ore annually
with adequate level of supply for at least 20 years.