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Australia
Ranger Mine

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 Location:
8 km E from Jabiru, Northern Territory, Australia

  Address:
Level 3, Energy House 18-20 Cavenagh Street
Darwin
Northern Territory, Australia
0801
Phone  ...  Subscription required
Fax+61 (0) 8 8924 3555
EmailEmail
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Financials
  • Personnel
  • Filings & News

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Overview

StageReclamation
Mine TypeOpen Pit
Commodities
  • Uranium
Mining Method
  • Truck & Shovel / Loader
Mine Life2021
Under the current legal framework, ERA is required to cease mining and processing activities in the Ranger Project Area by 8 January 2021, with final rehabilitation to be completed by 8 January 2026.


Owners

Source:
CompanyInterestOwnership
Rio Tinto plc 86.3 % Indirect
Energy Resources of Australia Ltd. (operator) 100 % Direct
Rio Tinto owns 86.3 per cent of ERA shares. The balance of the company’s shares are publicly held and traded on the Australian Securities Exchange.

Contractors

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Deposit Type

  • Sedimentary


Summary:

The Ranger No. 1 and No. 3 orebodies contain about 124,000 tonnes l^Og in highly chloritized metasediments of the lower Proterozoic Cahill Formation within about 500 m of the projected sub-Kombolgie Formation unconformity. In both orebodies, oxidized and reduced uranium minerals occur chiefly in quartzose schists that have highly variable amounts of muscovite, sericite, and chlorite.

Below the oxidized zone, uranium occurs chiefly as uraninite and pitchblende disseminated through thick sections of quartz-chlorite-muscovite schist and has no apparent association with graphite or sulfides. In fact, graphite is rare and sulfides are generally low in abundance (<0.5 percent). Higher ore grades occur in disrupted zones a few centimeters thick and in some quartz chlorite vein-like zones of uncertain origin. Uranium correlates strongly with chlorite, but not all of the many ages of chlorite have associated uranium. At least five textural varieties of chlorite are present and represent at least 3 ages. Preliminary microprobe analyses suggest that Mg-Fe-Al contents are relatively uniform. Apatite commonly occurs with chlorite. Uranium is not common in carbonate rocks and seems to occur only in disrupted zones that have chlorite alteration.

The structure of the orebodies is outwardly simple, particularly in No. 3; dips are less than 40° on most lithologic contacts. The No. 1 orebody is in a basin-like structure about 400 m wide that probably formed in part by pr ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Mining at Ranger involved a conventional open cut process, which begins with drilling and blasting. Pit 1 was mined out in 1994 and mining in Pit 3 ceased in November 2012. Prior to the completion of mining in the pits, mined material was categorised by a discriminator, which measured the gamma emissions of each load to calculate uranium grade for either stockpiling or immediate processing according to the grade of the ore (percent uranium oxide). Low-grade ore will be returned as backfill to the mined-out pits and covered by unmineralised rock to create the final landform.


Crushing and Grinding


Processing

Source: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2020201920182017201620152014
Uranium (U3O8) t  ......  Subscription required  ......  Subscription required1,9992,2942,3512,0051,165
All production numbers are expressed as U3O8.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202020192018201720162015
Tonnes milled  ......  Subscription required2.5 Mt of ore2.5 Mt of ore2.6 Mt of ore2.7 Mt of ore2.5 Mt of ore
Subscription required - Subscription is required.

Reserves at December 31, 2019:

CategoryOreTypeTonnage CommodityGradeContained 
Commodity
Proven & Probable Stockpiles 2.42 Mt Uranium (U3O8) 0.071 % 1,711 t
Measured & Indicated Stockpiles 41.29 Mt Uranium (U3O8) 0.11 % 43,614 t
Inferred Stockpiles 5.44 Mt Uranium (U3O8) 0.2 % 11,087 t

Financials:

Units20202019201820172016
Revenue M USD  ......  Subscription required  ......  Subscription required 201.3   211.2   267.8  
After-tax Income M USD  ......  Subscription required  ......  Subscription required -435.3   -43.5   -271.1  



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 25, 2021
....................... Subscription required ....................... Subscription required Subscription required Feb 24, 2022
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2020
Subscription required 2018
Subscription required 2017
Subscription required 2016

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2018
Annual Report 2018
Sustainability Report 2018
Annual Report 2017
Annual Report 2017
Annual Report 2016
Annual Report 2015
Other 1982
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