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Australia
South Flank Project

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 Location:
290 km S from Port Hedland, Western Australia, Australia

  Project Contacts:
Brookfield Pl L 37 125 St Georges Tce
Perth
Western Australia, Australia
6000
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  • Overview
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  • Mining
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  • Fleet
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  • Filings & News

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Overview

StageConstruction
Mine TypeOpen Pit
Commodities
  • Iron Ore
Mining Method
  • Truck & Shovel / Loader
Mine Life25 years (as of Jan 1, 2019)
Latest NewsBHP enters final quarter of South Flank development     August 18, 2020


Owners & OPERATOR

Source: p. 9
CompanyInterestOwnershipInvestor's Info
Mitsui Iron Ore Corporation Pty Ltd. 7 % Indirect
ITOCHU Minerals & Energy of Australia Pty Ltd. 8 % Indirect
BHP Group Ltd. 85 % Indirect
BHP Billiton Minerals Pty Ltd. (operator) 85 % Indirect
BHP as the manager for the Mount Goldsworthy Mining Associates Joint Venture, which owns Mining Area C including South Flank. The allocation between the partners of the Joint Venture is as follows:
- BHP Billiton Minerals Pty Ltd 85%
- Itochu Minerals and Energy Australia Pty Ltd 8%
- Mitsui Iron Ore Corporation Pty Ltd 7%.
BHP has the authority to act for the Mount Goldsworthy Joint Venture and is authorised as the manager.

Deposit Type

  • Banded iron formation hosted


Summary:

The Pilbara bioregion, where the South Flank is located, is situated in the south-eastern comer of the Pilbara Craton. The cratonic basement comprises Archaean granite-greenstone and is unconformably overlain by the late Archaean to Early Proterozoic deposits of the Hamersley Basin. The Hamersley Basin can be divided into three stratigraphic groups: the Fortescue, Hamersley and Turee Creek groups. Of these groups, the Fortescue and Hamersley groups outcrop in the immediate area Mining Area C.

The Hamersley Group is seen throughout the Hamersley Basin and forms the outcrop of Mining Area C. It is a sedimentary sequence comprising banded iron formations (BIFs), shales and dolomites with minor felsic volcanics and intrusive dolerite dykes and sills. The group contains both the Brockman and Marra Mamba Iron formations, which together host most of the known major iron ore deposits in the Pilbara region. The six lowermost formations of the Hamersley Group that exist within the area are listed below in order of increasing age:

1. Weeli Wolli Formation.

2. Brockman Iron Formation. Ore mineralisation from the Packsaddle Range deposits is contained within the Brockman Iron Formation, composed of a sequence of interbedded Banded Iron Formation, shales, siltstones and cherts. The four members comprising of the formation are:
- Yandicoogina Shale Member (shale and BIF);
- Joffre Member (BIF with minor shale bands);
- Whaleback Shale Member (interbedded shale, chert and BIF); and
- Dales Gorge Member (interbedded BIF and shale).

3. Mount McRae Shale (graphitic and chloritic shales interbedded with BIF). The Mount McRae Shale (~30 m thick) consists of alternating bands of black carbonaceous shale and chert and is commonly capped with pyritic chert bands. The Mount McRae Shale forms the basal unit to the ore horizons in the Brockman Iron Formation and contains a limited enriched ore zone. BHP Billiton Iron Ore informally subdivides this lithology into five units based on lithology and pyrite content. Several zones within the unit contain abundant pyrite nodules, thus, the formation is commonly regarded as a significant AMD risk throughout the Pilbara region.

4. Mount Sylvia Formation (shale, dolomite and BlF bands).The Mount Sylvia Formation (~2.5 Ma) has a thickness of ~50 m in the vicinity of the town of Newman, WA, and consists of three BIFs separated by interlayered shale and dolomite as well as small amounts of chert.

5. Wittenoom Formation. The Wittenoom formation is located stratigraphically above and is younger than (2.6 – 2.5 Ma) the Marra Mamba Formation. The Wittenoom Formation has been deeply eroded in the development area and is mostly covered by Tertiary Detritals. The formation is predominantly comprised of calcareous and manganiferous shales, cherts and dolomite and includes the following members comprising:
- Bee Gorge Member (calcareous shale and dolomite);
- Paraburdoo Member (dolomite – karstic in part); and
- West Angela Member (manganese-rich shale with minor BIF and chert bands).

6. The Marra Mamba Iron Formation consists of:
· The lowermost Nammuldi Member (approximately 80 m thick) which includes thick bedded, poddy cherty BIF interbedded with thin shales.
· The MacLeod Member (approximately 75 m thick) which includes BIF, cherts and carbonates with numerous interbedded shales.
· The upper Mount Newman Member (approximately 65 m thick) which includes podded BIF with interbedded carbonates and shales. The Member has been sub-divided by BHP into three sub- members based upon shale band content to allow for detailed modelling and estimation; lower N1, central N2 and upper N3. Iron ore mineralisation within Marra Mamba hosted deposits occurs as either martite-goethite or martite-ochrous goethite formed primarily by supergene enrichment processes. The Mount Newman Member is the main mineralised horizon within the formation although lesser amounts of mineralisation can be found in the Nammuldi and MacLeod Members and within the overlying West Angela Member shales of the Wittenoom Formation.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Mining at South Flank will be undertaken utilising conventional open-cut mining for iron ore. Campaign mining involves drilling, blasting, and categorisation of blasted material into iron ore or waste rock. Iron ore will be extracted from the three South Flank deposits - Highway, Vista Oriental and Grand Central.


Crushing and Grinding


Processing

Flow Sheet: Source

Summary:

BHP is seeking a works approval to construct processing and support infrastructure at Mining Area C -South Flank. Primary crushing will occur at South Flank, and overland conveyors will transport crushed ore to the Mining Area C hub. The existing Mining Area C hub infrastructure and facilities will be expanded with a a new ore handling plant (OHP) to achieve a nominal combined processing rate of 150 Mtpa of blended ore.

Ore from the South Flank via Vista Oriental (PC1) and Grand Central North (PC2) will be processed through two primary crushing (PC) facilities, each with a nameplate capacity of 40Mtpa. The two primary crushing stations (PC1 and PC2) will have a dual truck dump apron located at the top of a mechanically stabilised earth wall designed to accept ultra-class mining trucks of up to 363t capacity. Each primary crusher will have a nameplate capacity of 40Mtpa. The mining trucks will feed into the Run of Mine (ROM) bin located over a gyratory crusher that will crush ........


Projected Production:

CommodityUnitsAvg. Annual
Iron Ore Mt 80
All production numbers are expressed as lump & fines.


Reserves at June 30, 2018:

CategoryTonnage CommodityGrade
Proven 360 Mt Iron 62.4 %
Probable 1,320 Mt Iron 61.5 %
Proven & Probable 1,680 Mt Iron 61.7 %
Measured 700 Mt Iron 62.2 %
Indicated 1,650 Mt Iron 61.1 %
Inferred 5,380 Mt Iron 59.7 %
Total Resource 7,730 Mt Iron 60.2 %

2019 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Total CapEx $M USD  ......  Subscription required
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Heavy Mobile Equipment as of October 17, 2019:
HME TypeModelQuantity
Truck (haul) ....................... Subscription required 41
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 5, 2020
....................... Subscription required ....................... Subscription required Subscription required Sep 5, 2020
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
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News:

NewsDate
BHP enters final quarter of South Flank development August 18, 2020
BHP advances South Flank project construction January 14, 2020
Komatsu strikes BHP deal for 41 South Flank autonomous trucks September 5, 2019
Primero secures South Flank contract for world’s largest balance machines August 27, 2019
Fenner Dunlop receives conveyor contract at South Flank April 2, 2019
Monadelphous builds $212m South Flank contract portfolio March 29, 2019
Civmec contract at South Flank to create up to 80 jobs February 28, 2019
Monadelphous contract at BHP’s South Flank to create 400 jobs February 19, 2019
BHP hands out South Flank contract to Clough February 19, 2019
BHP awards $250m South Flank contract to Thyssenkrupp November 29, 2018
Primero bolstered by contract win at South Flank November 16, 2018
Work starts at BHP’s South Flank project July 30, 2018

Aerial view:

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