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Tanzania
Nachu Project

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 Location:
150 km NW from Mtwara, Tanzania

  Project Contacts:
House No. 19, Plot No. 890, Yacht Club Road Masaki
PO Box 11085
Dar es Salaam
Tanzania
Phone  ...  Subscription required
EmailEmail
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Graphite
Mining Method
  • Truck & Shovel / Loader
Mine Life15.5 years (as of Jan 1, 2022)
The Nachu Project represents one of the largest Mineral Resources of large flake graphite in the world.


Owners

Source: p. 10
CompanyInterestOwnership
Magnis Energy Technologies Ltd. 100 % Indirect
Special Mining Licence (SML) has been granted to Uranex Tanzania Ltd, the 100% owned Tanzanian subsidiary of Magnis.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Metamorphic


Summary:

The Nachu project is situated in graphitic schist with associated dolomites and gneisses.

The majority of EM modelling and geological intercepts indicate open folded anticlines with various dips to fold limbs in each resource Block.

The graphite mineralization is mostly associated with the schist, and is metamorphic (meta- sedimentary) in origin.

The Nachu deposit comprises five mineralized areas, being Blocks B, D, F, F South Limb, and J.

These deposit cover a combined strike length of 5.5 km and an average plan width of up to 300 m for B,D,J, F South and 800 m for F (often comprising multiple mineralized horizons separated by barren or low grade horizons), to depths between 150 m and 250 m below surface.

The mineralization occurs at or near surface.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Orelogy Consulting (Orelogy) completed a mine planning study in August 2022, largely updating the work performed by Orelogy for the BFS. The updated parameters included:
- costs of processing, sales and mining;
- processing recovery;
- concentrate grade; and
- product pricing.

The mining scope included pit optimisation, mine design, scheduling and cost estimation.

The 2022 optimisation analysis demonstrated that the 2016 F and FS shells were still valid (i.e. demonstrated sufficient value) and therefore the 2016 mine plan (pit designs, mining and processing schedules, ore reserves) could be adopted for the current 2022 study.

Mine Design
Pits, waste dumps and haul roads were designed for the life of the Project as part of the 2016 BFS and these were carried over into the 2022 update. The design criteria governing slope designs, ramp widths and minimum mining widths remained valid. Locations for Run of Mine (RoM) and low grade ore stockpiles were also allocated.

The life-of-mine strip ratio is estimated at 1.5:1. Mining is set to be undertaken by the relatively conventional open pit mining method of drill, blast, shovel and truck. Base mine planning involves the use of 90 tonne excavators and 40 tonne articulated trucks. However ramp construction design parameters allow for the use of larger 90 tonne trucks.

Designs and cutbacks have been designed to suit 100t excavators and 91t payload rigid dump ........


Crushing and Grinding


Processing

Source: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityUnitsAvg. Annual
Graphite kt 236
All production numbers are expressed as concentrate.

Operational Metrics:

Metrics
Stripping / waste ratio  ......  Subscription required
Waste tonnes, LOM  ......  Subscription required
Ore tonnes mined, LOM  ......  Subscription required
Total tonnes mined, LOM  ......  Subscription required
Annual milling capacity  ......  Subscription required
* According to 2022 study.
Subscription required - Subscription is required.

Reserves at February 1, 2016:
Mineral Resource Cut-off of 3% graphitic carbon.

CategoryTonnage CommodityGradeContained Graphite
Proven 50.5 Mt Graphite 4.6 %
Probable 25.7 Mt Graphite 5.1 %
Proven & Probable 76.3 Mt Graphite 4.8 % 3.6 Mt
Measured 63.5 Mt Graphite 4.7 %
Indicated 61 Mt Graphite 5.8 %
Inferred 49.6 Mt Graphite 5.7 %
Total Resource 174 Mt Graphite 5.4 %

Commodity Production Costs:

CommodityUnitsAverage
Cash costs Graphite USD  ......  Subscription required&nbs
Operating margin Graphite USD  ......  Subscription required&nbs
Assumed price Graphite USD  ......  Subscription required&nbs
* According to 2022 study / presentation.
Subscription required - Subscription is required.

Operating Costs:

Units2022
OP mining costs ($/t milled) USD 13.9 *
Processing costs ($/t milled) USD  ......  Subscription required
G&A ($/t milled) USD  ......  Subscription required
Total operating costs ($/t milled) USD  ......  Subscription required
* According to 2022 study.
Subscription required - Subscription is required.

2022 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M USD  ......  Subscription required
Total CapEx $M USD  ......  Subscription required
After-tax NPV @ 10% $M USD  ......  Subscription required
After-tax IRR, %  ......  Subscription required
After-tax payback period, years  ......  Subscription required
Subscription required - Subscription is required.


Proposed Heavy Mobile Equipment as of September 27, 2022:
HME TypeSizeQuantityLeased or
Contractor
Excavator 90 t ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 28, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
Feasibility Study Report 2022
................................... Subscription required 2020
Feasibility Study Report 2016
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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