Overview
| Stage | Production |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
- Truck & Shovel / Loader
- Dragline
|
| Production Start | ...  |
| Mine Life | 2043 |
The Moanda mine rank among the world’s richest manganese deposits. The commercial ore content averages about 45%.
The Moanda mine extension project involves gradually implementing modular washing plants and a conveyor on the Okouma plateau. |
Source:
p. 10,177
| Company | Interest | Ownership |
|
Société Équatoriale des Mines (SEM)
|
28.94 %
|
Indirect
|
|
Eramet Group
|
63.71 %
|
Indirect
|
|
Comilog S.A.
(operator)
|
100 %
|
Direct
|
The Moanda mine is owned by Compagnie Miniese de L’ogooue S.A (Comilog). In Comilog, Eramet International S.A. is share holder of 63.71%, Société Équatoriale des Mines (SEM, state owned company – Gabon) owned the share of 28.94% and others holding share of 7.35%.
Contractors
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Summary:
Moanda is mining high-grade manganese tabular deposits, located under low overburden layer and formed by the weathering of volcano-sedimentary rocks.
Manganese ore is found in 5 plateaus around Moanda. They are Bangombe, Okouma, Bafoula, Massengo and Yeye, the most important being Okouma and Bangombe. The manganese ore in the mine is a result of Supergene Sulphide enrichment of the Precambrian Francevillian sediments.
Mining Methods
- Truck & Shovel / Loader
- Dragline
Summary:
The Moanda mine is operated by opencast method. The ore is covered by a 4 to 5 metre thick layer of overburden. This is extracted by dragline. The ROM is extracted using mechanical excavators and loaded into 110 tonnes capacity dumpers.
The mining operations are carried out by open cast method using 600 to 900 m long trenches with width of 20 m. These trenches are backfilled with waste after extraction of ore. The stripping ratio is reported to be 1:1.
Moanda mine extension project
As part of the development of its activities, Comilog is increasing production capacity at its Moanda site. The project includes the launch of the exploitation of a new Okouma plateau. Mining operations started in December 2020.
Source:
Summary:
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Production:
| Commodity | Units | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 |
|
Manganese
|
Mt
| ...... ^ | ...... | ...... | ...... | ...... | 4,330 |
All production numbers are expressed as ore.
^ Guidance / Forecast.
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Reserves at January 1, 2023:
The ore reserves are defined at an Mn cut-off grade of the lumpy fraction higher than or equal to 30%.
The mineral resources are defined at an Mn cut-off grade of the lumpy fraction higher than or equal to 30%.
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Proven
|
89 M dmt
|
Manganese
|
46.1 %
|
26 Mt
|
|
Probable
|
136 M dmt
|
Manganese
|
43.8 %
|
38 Mt
|
|
Proven & Probable
|
225 M dmt
|
Manganese
|
44.7 %
|
64 Mt
|
|
Measured
|
128 M dmt
|
Manganese
|
45.1 %
|
37 Mt
|
|
Indicated
|
229 M dmt
|
Manganese
|
43.2 %
|
64 Mt
|
|
Inferred
|
56 M dmt
|
Manganese
|
43.2 %
|
15 Mt
|
|
Total Resource
|
414 M dmt
|
Manganese
|
43.8 %
|
116 Mt
|
Commodity Production Costs:
| | Commodity | Units | 2022 | 2021 |
|
Total cash costs
|
Manganese
|
USD
|
......
|
......
|
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Financials:
| | Units | 2023 | 2022 | 2021 |
|
Capital expenditures (planned)
|
M EUR
| ...... | | |
|
Capital expenditures
|
M EUR
| | ...... | ...... |
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| Type | Material | Diameter | Length | Description |
Corporate Filings & Presentations:
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