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Tanzania
Bunyu Project

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 Location:
112 km W from Mtwara, Tanzania

  Project Contacts:
Level 25, Suite 10 108 St. Georges Terrace
Perth
Western Australia, Australia
6000
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Graphite
Mining Method
  • Truck & Shovel / Loader
Mine Life7.1 years (as of Jan 1, 2018)


Owners

Source: p. 30
CompanyInterestOwnership
Volt Resources Ltd. 100 % Indirect
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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Deposit Type

  • Metamorphic


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).


Mining Methods

  • Truck & Shovel / Loader


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.


Crushing and Grinding
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Processing

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Summary:

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Projected Production:

CommodityUnitsAvg. Annual
Graphite kt 24
All production numbers are expressed as concentrate.

Operational Metrics:

Metrics
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 *
Annual processing rate 400,000 t *
* 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.

CategoryTonnage CommodityGrade
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 %

Commodity Production Costs:

CommodityUnitsAverage
Cash costs Graphite USD 664 / t *  
Assumed price Graphite USD 1,195 / t *  
* According to 2018 study / presentation.

Operating Costs:

Units2018
OP mining costs ($/t milled) USD 7.8 *
Processing costs ($/t milled) USD  ......  Subscription required
G&A ($/t milled) USD  ......  Subscription required
Total operating costs ($/t milled) USD  ......  Subscription required
* According to 2018 study.
Subscription required - Subscription is required.

2018 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Pre-Production capital costs $M USD  ......  Subscription required
Net revenue (LOM) $M USD  ......  Subscription required
EBITDA (LOM) $M USD  ......  Subscription required
Pre-tax NPV @ 10% $M USD  ......  Subscription required
After-tax NPV @ 10% $M USD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
After-tax IRR, %  ......  Subscription required
After-tax payback period, years  ......  Subscription required
Subscription required - Subscription is required.


Heavy Mobile Equipment:

Mine Management:

Job TitleNamePhoneProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 1, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 14, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Nov 14, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2018

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
................................... Subscription required 2019
................................... Subscription required 2019
Feasibility Study Report 2018
Pre-Feasibility Study Report 2016
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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