Overview
Stage | Production |
Mine Type | Underground |
Commodities |
|
Mining Method |
- Sub-level caving
- Shrinkage stoping
- Room-and-pillar
|
Production Start | ...  |
Source:
Company | Interest | Ownership |
Nova Resources B.V.
|
100 %
|
Indirect
|
Vostoktsvetmet LLC
(operator)
|
100 %
|
Direct
|
KAZ Minerals has been wholly acquired by Nova Resources BV to support the Company’s pursuit of a capital-intensive strategy focused on long-term growth.
Vostoktsvetmet is a wholly-owned subsidiary of KAZ Minerals.
Contractors
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Summary:
Irtyshsky is an operating underground mine exploiting a polymetallic volcanogenic massive sulphide (VMS) deposit of average size and grade. The mineralisation is of lenses with extensive strike extents but more limited down-dip persistence. There are three principal ore bodies: Main, South East, No 2.
Irtyshsky Principal Orebodies:
Main:
- Orebody Strike length - 2,500 m;
- Down-dip length - 750 m;
- Thickness - 3.5 m.
South East:
- Orebody Strike length - 3,000 m;
- Down-dip length - 400 m;
- Thickness - 2.7 m.
No 2:
- Orebody Strike length - 1,600 m;
- Down-dip length - 300 m;
- Thickness - 1.35 m.
The orebodies pitch slightly to the NW with their long axes roughly parallel. The average strike of the Irtyshsky ore body is NW-SE and the dip of the ore body is steep to sub-vertical (70-80°). The ore body is gently folded with secondary thickening of the ore lenses in the fold axes. The copper and zinc grades increase with increasing depth from surface.
Mining Methods
- Sub-level caving
- Shrinkage stoping
- Room-and-pillar
Summary:
Labour intensive shrinkage stoping is used with high ore dilution (32%). Some sublevel caving and room and pillar mining is also conducted. Jackleg drills and slushers are used for mining with rail haulage to the ore pass leading to a jaw crusher. Hoisting in a 650 m deep shaft is conducted with 10 t skips.
Source:

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Source:
Summary:

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Reserves at December 31, 2021:
Category | Tonnage | Commodity | Grade |
Proven & Probable
|
1 Mt
|
Copper
|
1.24 %
|
Proven & Probable
|
1 Mt
|
Zinc
|
2.29 %
|
Proven & Probable
|
1 Mt
|
Gold
|
0.2 g/t
|
Proven & Probable
|
1 Mt
|
Silver
|
38 g/t
|
Proven & Probable
|
1 Mt
|
Lead
|
0.26 %
|
Measured & Indicated
|
1.6 Mt
|
Copper
|
1.58 %
|
Measured & Indicated
|
1.6 Mt
|
Zinc
|
4.93 %
|
Measured & Indicated
|
1.6 Mt
|
Gold
|
0.38 g/t
|
Measured & Indicated
|
1.6 Mt
|
Silver
|
70 g/t
|
Measured & Indicated
|
1.6 Mt
|
Lead
|
0.65 %
|
Corporate Filings & Presentations:
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