Overview
Stage | Permitting |
Mine Type | Open Pit |
Commodities |
|
Mining Method |
|
Mine Life | 7.1 years (as of Jan 1, 2018) |
Source:
p. 30
The Bunyu Project PLs are held by Volt Graphite Tanzania Ltd (formerly Nachi Resources Limited) which in turn is 100% owned by Volt Resources Limited.
Contractors
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Summary:
The graphite mineralisation occurs in Archean basement rocks of the Mozambique Belt system which principally comprise metamorphic rocks ranging from schist to gneisses including marbles, amphibolite, graphitic schist, mica and kyanite schist, acid gneisses, hornblende, biotite and garnet gneisses, quartzite, granulite, and pegmatite veins.
Exploration has focused on areas where there is no or minimal overlying younger sedimentary sequences remaining (mostly Cretaceous sandstones and conglomerates).
Summary:
The ore zones at Bunyu (Namangale) are relatively wide, tabular deposits which are favourable for mining as dilution will be low and this dilution is likely to carry economic graphite material. Dilution and recovery of the ore zone were estimated at 5% and 95% respectively. Therefore the Bunyu (Namangale) deposits are suited to conventional open pit mining methods, of drill & blast, load & haul. Separate fleets will be used for Bunyu (Namangale) North and South due to the distance between the mining areas.
The proposed mining method is a conventional, drill, blast, load and haul, open pit with waste material stacked in waste dumps. Mining is to be undertaken by a contractor under the control and management of VGT personnel and will likely be operated on a 12 hour 365 day per year basis as required. A bench height of 6 metres has been selected, excavated in 3 x 2 metre lifts or flitches. This is considered appropriate for both the orebody and the equipment proposed by mining contractors.
Source:

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Flow Sheet:
Summary:

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Projected Production:
Commodity | Units | Avg. Annual |
Graphite
|
kt
| 24 |
All production numbers are expressed as concentrate.
Operational Metrics:
Metrics | |
Annual processing rate
| 400,000 t * |
Stripping / waste ratio
| 0.73 * |
Waste tonnes, LOM
| 2,044 kt * |
Ore tonnes mined, LOM
| 2,815 kt * |
Total tonnes mined, LOM
| 4,859 kt * |
* According to 2018 study.
Reserves at July 30, 2018:
The Mineral Resources and Reserve have been reported above a 2.93% TGC cut-off grade.
Category | Tonnage | Commodity | Grade |
Proven
|
1,305 kt
|
Graphite
|
6.1 %
|
Probable
|
1,511 kt
|
Graphite
|
6.4 %
|
Proven & Probable
|
2,815 kt
|
Graphite
|
6.3 %
|
Measured
|
6.1 Mt
|
Graphite
|
5.8 %
|
Indicated
|
31.9 Mt
|
Graphite
|
5.6 %
|
Inferred
|
36.9 Mt
|
Graphite
|
5.1 %
|
Total Resource
|
76.8 Mt
|
Graphite
|
5.4 %
|
Corporate Filings & Presentations:
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