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Australia
Southdown Project

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 Location:
80 km NE from Albany, Western Australia, Australia

  Project Contacts:
31 Albany Highway Albany
Albany
Western Australia, Australia
6330
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  • Overview
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  • Geology
  • Mining
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  • Production
  • Reserves
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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Iron
Mining Method
  • Truck & Shovel / Loader
Mine Life28 years (as of Jan 1, 2022)
A Definitive Feasibility Study completed in 2012 (DFS 2012, see ASX announcement May 2012) defined a project to produce 10 million tonnes per annum (mtpa) of high-grade magnetite concentrate at 69.5% iron, over a potential mine life of 14 years.

PFS 2022, completed in February 2022, has identified a reduced capital development option.

Grange Resources continue to investigate alternate development models which may see the Southdown Project move into a Definitive Feasibility Study.


Owners

Source: p. 3
CompanyInterestOwnership
SRT Australia Pty Ltd 30 % Indirect
Grange Resources Ltd. 70 % Indirect
The Southdown Joint Venture (SDJV) is a joint venture between Grange Resources Limited (70%) and SRT Australia Pty Ltd (SRTA) (30%).

Contractors

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Deposit Type

  • Orogenic


Summary:

The Project is located ~90km northeast of Albany in the southwest corner of Western Australia. The Southdown deposit extends approximately 12km in length, under Mining Lease and Retention Licence covering an area of more than 120 square kilometres on largely freehold farming property.

The Southdown deposit occupies the core of a gently east plunging, overturned tight isoclinal syncline with a steeply south dipping axial surface. The deposit is offset by moderately northeast dipping dextral reverse faults and subsidiary steeply south-east dipping sinistral faults. Currently the resource extends for 11 kilometres of the 12 kilometre strike length of the deposit, with variable depths ranging from a surface outcrop in the west, to 480 metres below surface in the east.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Mining will be undertaken by conventional bulk mining methods utilising drill and blast, hydraulic face shovels and dump trucks coupled to a run of mine (ROM) stockpile. Ore will be trucked directly from the blasted faces to either direct tip into the primary crusher or onto the ROM stockpile, as proposed within DFS 2012, but with a reduced mining rate to satisfy a nominal concentrate production rate of 5mtpa.

The final proposed pit is six kilometres long, one kilometre wide and about 370 metres deep.

The reserve within mine lease M70/1309 has the capacity to provide a nominal 5mtpa of concentrate for up to 28 years of mine life. This study uses contractor mining.


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityUnitsAvg. Annual
Iron (magnetite) kt 5,000
All production numbers are expressed as concentrate.

Operational Metrics:

Metrics
Annual mining rate  ......  Subscription required
* According to 2022 study.
Subscription required - Subscription is required.

Reserves at December 31, 2020:
Measure of recoverable magnetite Mineral Resources are reported above a cut-off of 10% DTR.

CategoryTonnage CommodityGrade
Proven 384.6 Mt DTR 35.6 %
Probable 3.1 Mt DTR 41.7 %
Proven & Probable 387.7 Mt DTR 35.6 %
Measured 423 Mt DTR 37.8 %
Indicated 86.8 Mt DTR 38.7 %
Inferred 747.1 Mt DTR 30.9 %
Total Resource 1,257 Mt DTR 33.7 %

Commodity Production Costs:

CommodityAverage
All-in sustaining costs (AISC) Iron (magnetite)  ......  Subscription required&nbs
C1 cash costs Iron (magnetite)  ......  Subscription required&nbs
Assumed price Iron (magnetite)  ......  Subscription required *
* According to 2022 study / presentation.
Subscription required - Subscription is required.

2022 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Sustaining CapEx $M AUD  ......  Subscription required
Total CapEx $M AUD  ......  Subscription required
After-tax Cash Flow (LOM) $M AUD  ......  Subscription required
After-tax NPV @ 10% $M AUD  ......  Subscription required
After-tax IRR, %  ......  Subscription required
After-tax payback period, years  ......  Subscription required
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Pipelines
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Heavy Mobile Equipment:

Mine Management:

Job TitleNamePhoneProfileRef. Date
....................... Subscription required ....................... Subscription required ....................... Subscription required May 11, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 13, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
Pre-Feasibility Study Report 2022
Press Release 2018
Corporate Presentation 2012
Press Release 2012
Subscription required - Subscription is required.

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