Overview
| Stage | Production |
| Mine Type | Underground |
| Commodities |
|
| Mining Method |
|
| Processing |
- Gravity separation
- Carbon in solution (CIS)
- Carbon in pulp (CIP)
|
| Mine Life | 22 years (as of Jan 1, 2016) |
The most recent production data were publicly available for 2016 (as of August 25, 2018). |
Source:
p. 1
Gold Fields of Shamva is the parent company of Shamva Mine.
Summary:
Shamva Mine is situated in the Shamva greenstone belt and exploits numerous orebodies which occur within a 300- to 400-m wide Riedel-type shear system. The sub-vertical orebodies are indistinguishable from the host rocks. Mineralisation within the orebodies consists predominantly of pyrite (>90%) with minor sphalerite, galena, chalcopyrite, pyrrhotite and arsenopyrite. Gold is found in contact with the sulphides, often in fractures, and varies significantly in grain size with visible gold commonly intersected in development and underground drilling. Silver occurs with the gold and represents some 50% of gold content.
Summary:
The current hoisting capacity is 45ktpm. The average mined grade is 3g/t Au.
Processing Technologies
- Gravity separation
- Carbon in solution (CIS)
- Carbon in pulp (CIP)
Summary:
The ore is processed through a single metallurgical facility that uses a combination of crushing, milling, gravity recovery and combination of carbon-in-solution and -pulp processes.
The current milling capacity is 33ktpm.
Production:
| Commodity | Units | 2016 | 2015 | 2014 | 2013 |
|
Gold
|
oz
| ......  | 25,465 | 24,037 | 20,100 |
Reserves at June 30, 2016:
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Proven
|
929 kt
|
Gold
|
2.87 g/t
|
86 koz
|
|
Probable
|
3,608 kt
|
Gold
|
2.95 g/t
|
342 koz
|
|
Proven & Probable
|
4,537 kt
|
Gold
|
2.93 g/t
|
428 koz
|
|
Measured
|
1,992 kt
|
Gold
|
2.54 g/t
|
163 koz
|
|
Indicated
|
11,068 kt
|
Gold
|
2.39 g/t
|
851 koz
|
|
Measured & Indicated
|
13,060 kt
|
Gold
|
2.42 g/t
|
1,014 koz
|
|
Total Resource
|
41,501 kt
|
Gold
|
1.97 g/t
|
2,623 koz
|
Commodity Production Costs:
| | Commodity | Units | 2016 | 2014 | 2013 |
|
All-in sustaining costs (AISC)
|
Gold
|
USD
|
...... 
|
|
|
|
C1 cash costs
|
Gold
|
USD
|
......
|
932 / oz
|
|
|
All-in costs
|
Gold
|
USD
|
|
940 / oz
|
1,169 / oz
|