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Australia
Amrun (South of Embley) Mine

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 Location:
39 km SW from Nanum, Queensland, Australia

  Address:
WebsiteWeb
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  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Bauxite
Mining Method
  • Truck & Shovel / Loader
Processing
  • Wash plant
Mine Life40 years (as of Jan 1, 2018)
The $1.9 billion Amrun bauxite mine on the Cape York Peninsula in north Queensland achieved its design capacity rate of 22.8 million tonnes a year in the fourth quarter of 2019.
Latest NewsRio Tinto ships first bauxite from Amrun     December 3, 2018


Owners

 
CompanyInterestOwnership
Rio Tinto plc 100 % Indirect

Deposit Type

  • Laterite
  • Bauxite


Summary:

The dominant geological unit of the Project (the South of Embley Project) area is the Ferruginous Duricrust, which is derived from heavily laterised sandstones of the Bulimba Formation. Ferruginous Duricrust is essentially the same as the Andoom land system as defined by Godwin (1985) and Gunness et al. (1987). Between the bauxite and sandstone there is a transitional zone consisting of kaolinite clay, unlike the sharp ironstone-bauxite contact as in the East Weipa and Andoom mines.

The top of the bauxite strata is generally less than 1m below the natural ground surface. The average ore thickness across the identified reserves in the Project area is approximately 3.4m.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Project (the South of Embley Project) currently has bauxite reserves that could sustain a mine life of about 40 years, depending on annual production rate. Mine life also depends on the extent to which mineable reserves may change in the future subject to ongoing resource evaluation and economic factors.

Vegetation would be cleared by bulldozers, following the wet season when the ground is sufficiently moist. Soil would be salvaged and returned by scraper or haul truck directly to mined-out areas undergoing rehabilitation where possible, or stockpiled for later respreading. The overburden above the bauxite would then be removed by front-end loader and returned to mined-out pits by trucks.

The top of the bauxite strata is generally less than 1m below the natural ground surface. The average ore thickness across the identified reserves in the Project area is approximately 3.4m. A shallow open pit would be developed whereby bauxite would be mined by front-end loader or excavator. Bauxite is relatively easy to dig and does not require blasting.


Crushing and Grinding


Processing

  • Wash plant

Source: Subscription required

Summary:

Crude bauxite ore is transformed into product by a process known as beneficiation. Beneficiation involves separation of the bauxite and waste materials through crushing, screening, washing and dewatering. No chemicals are added to the process. This process produces pea-sized pisolite product ore and tailings (consisting of water, fine bauxite pisolite, sands and clays). The particle size of tailings is less than 0.6mm.

Bauxite would originally be processed in the Boyd beneficiation plant. Production capacity may be increased by expanding the Boyd beneficiation plant and/or by building a second beneficiation plant at the proposed Norman Creek infrastructure area located approximately 15km south-east of the Boyd infrastructure area. The Norman Creek beneficiation plant would also be designed such that it can be expanded if additional capacity is required.

The tailings would be pumped in slurry form (30% solids by weight) to a TSF. The TSFs would be “turkey’s ........


Production:

CommodityUnits2019 *
Bauxite Mt  ......  Subscription required ^
* Average annual production reported in 2019 ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics20192018
Annual mining capacity  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at December 31, 2019:

CategoryTonnage CommodityGrade
Proven 273 Mt Al2O3 52.7 %
Probable 981 Mt Al2O3 53.2 %
Proven & Probable 1,253 Mt Al2O3 53.1 %
Measured 35 Mt Al2O3 48.7 %
Indicated 271 Mt Al2O3 49.8 %
Inferred 274 Mt Al2O3 50.5 %


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 29, 2019
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2018

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
................................... Subscription required 2018
Technical Report 2012
Subscription required - Subscription is required.

News:

NewsDate
Rio Tinto ships first bauxite from Amrun December 3, 2018

Aerial view:

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