Overview
| Status | Care and Maintenance |
| Mine Type | Underground |
| Commodities |
|
| Mining Method |
|
| Processing |
- Gravity separation
- Carbon in leach (CIL)
|
| Mine Life | 9 years (as of Jan 1, 2016) |
The most recent production data were publicly available for 2016 (as of May 24, 2021).
Metallon has been forced to put its mines on care and maintenance because of the unsustainable costs of running them without proper compensation for its proceeds from the Government of Zimbabwe. Where payments were received, they would only amounted to a third of the total owed. Between 2016 and 2019, Metallon lost US$82m and Metallon is claiming for US$132m for the lack of profit and procurement, including interest. |
Source:
Bulawayo Mining Company owns How Mine.
Summary:
How Mine is situated in the Bulawayo greenstone belt and exploits several individual mineralised pods situated within a sigmoidal structure which dips at 70° to 80° west. The pods are broadly cigar-shaped bodies comprising zones of enhanced hydrothermal alteration and gold mineralisation that plunge steeply. Mineralisation within the orebodies consists predominantly of pyrite (>90%) with minor chalcopyrite and pyrrhotite and is associated with silicification and carbonation. Gold is found in contact with the sulphides, often in fractures, although there is also some free gold. Some silver occurs with the gold, increasing from 4% to 8% of gold as mining progresses down-dip.
Summary:
The current hoisting capacity is 35ktpm. The average mined grade is 5g/t Au.
Processing
- Gravity separation
- Carbon in leach (CIL)
Source:
Summary:
The ore is processed at a central processing facility, using a combination of conventional milling, gravity recovery and carbon-in-leach process.
The current milling capacity is 33ktpm.
Production:
| Commodity | Units | 2016 | 2015 | 2014 | 2013 |
|
Gold
|
oz
| 50,191 | 52,314 | 55,008 | 40,300 |
Reserves at June 30, 2016:
| Category | OreType | Tonnage | Commodity | Grade | Contained Metal |
|
Proven
|
In-Situ (UG)
|
430 kt
|
Gold
|
5 g/t
|
69 koz
|
|
Proven
|
Total
|
430 kt
|
Gold
|
5 g/t
|
69 koz
|
|
Probable
|
In-Situ (OP)
|
817 kt
|
Gold
|
1.1 g/t
|
30 koz
|
|
Probable
|
In-Situ (UG)
|
1,794 kt
|
Gold
|
3.5 g/t
|
201 koz
|
|
Probable
|
Total
|
2,611 kt
|
Gold
|
2.7 g/t
|
231 koz
|
|
Proven & Probable
|
In-Situ (OP)
|
817 kt
|
Gold
|
1.1 g/t
|
30 koz
|
|
Proven & Probable
|
In-Situ (UG)
|
2,223 kt
|
Gold
|
3.8 g/t
|
270 koz
|
|
Proven & Probable
|
Total
|
3,040 kt
|
Gold
|
3.1 g/t
|
300 koz
|
|
Measured
|
In-Situ (UG)
|
1,609 kt
|
Gold
|
5.1 g/t
|
265 koz
|
|
Measured
|
Total
|
1,609 kt
|
Gold
|
5.1 g/t
|
265 koz
|
|
Indicated
|
In-Situ (OP)
|
817 kt
|
Gold
|
1.1 g/t
|
30 koz
|
|
Indicated
|
In-Situ (UG)
|
2,250 kt
|
Gold
|
3.7 g/t
|
265 koz
|
|
Indicated
|
Total
|
3,067 kt
|
Gold
|
3 g/t
|
295 koz
|
|
Measured & Indicated
|
In-Situ (OP)
|
817 kt
|
Gold
|
1.1 g/t
|
30 koz
|
|
Measured & Indicated
|
In-Situ (UG)
|
3,858 kt
|
Gold
|
4.28 g/t
|
530 koz
|
|
Measured & Indicated
|
Total
|
4,675 kt
|
Gold
|
3.73 g/t
|
560 koz
|
|
Total Resource
|
In-Situ (OP)
|
7,734 kt
|
Gold
|
0.7 g/t
|
186 koz
|
|
Total Resource
|
In-Situ (UG)
|
7,828 kt
|
Gold
|
3.9 g/t
|
973 koz
|
|
Total Resource
|
Total
|
15,562 kt
|
Gold
|
2.3 g/t
|
1,159 koz
|
Commodity Production Costs:
| | Commodity | Units | 2016 | 2014 |
|
All-in sustaining costs (AISC)
|
Gold
|
USD
|
660 / oz
|
|
|
C1 cash costs
|
Gold
|
USD
|
520 / oz
|
541 / oz
|
|
All-in costs
|
Gold
|
USD
|
|
562 / oz
|
Mine Management:
| Job Title | Name | Profile | Ref. Date |
.......................
|
.......................
|
|
May 24, 2021
|
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