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Namibia
Langer Heinrich Mine

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 Location:
76 km E from Swakopmund, Namibia

  Project Contacts:
PO Box 156
Swakopmund
Namibia
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageRestarting
Mine TypeOpen Pit
Commodities
  • Uranium
  • Vanadium
Mining Method
  • Truck & Shovel / Loader
Mine Life17 years (as of Jan 1, 2021)
The mine was transitioned into care and maintenance in August 2018 due to the sustained low uranium price. The restart work technical programs are now complete and have reinforced Paladin’s confidence in Langer Heinrich Mine as a robust, competitive long-life operation ready to rapidly restart production in the right uranium price environment.


Owners

Source: p. 10,39
CompanyInterestOwnership
Paladin Energy Ltd. 75 % Indirect
The tenements are 100% owned by Langer Heinrich Uranium (Pty) Ltd which, in turn, is 75% indirectly owned by Paladin Energy Ltd. The remaining 25% is owned by CNNC Overseas Uranium Holdings Ltd. (CNNC).

Contractors

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Deposit Type

  • Calcrete hosted


Summary:

Langer Heinrich is a calcrete-hosted secondary uranium deposit associated with valley-fill sediments in an extensive Tertiary palaeodrainage system. Uranium occurs as carnotite, an oxide mineral containing both uranium and vanadium, deposited as thin films lining cavities and fracture planes and as grain coatings and disseminations. The deposit extends over a 15 km length. Mineralisation is nearsurface, between one and thirty metres thick, and between 50 and 1,100 metres wide depending on the width of the palaeovalley. After calcrete development and mineralisation, parts of these sediments were eroded because of uplift that caused rejuvenated river flows - the largest being the Gawib River that in part follows the palaeovalley and has dissected and modified both the calcrete and associated mineralisation.

The current mineral resource is modelled to be approximately 16Km in strike, 0m to 100m in depth and varies in width from 300m to 900m depending on the position of the paleochannel walls.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Mining method is conventional open pit mining as was used successfully at the operation until mining ceased.

No mining dilution or ore loss is applied to ROM stockpile recovery as dimensions are well known. The ROM stockpile floors are surveyed prior to build and no blasting is required.

Based on the back analysis of existing data and a factor of safety assessment, the pit slope design parameters are recommended:

Parameter Wall Height <60 m 60 m < Wall Height < 90 m
Batter face angle 62° 62°
Bench height 9 m 9 m
Berm width 5 m 5 m
Overall slope angle 45° 41°
Geotechnical berm width N/A 15 m

The H pits consist of five mining areas, totaling 17.6 Mt of Ore Reserves at 484 ppm U3O8 and an average strip ratio of 4.1:1.

The F pits consist of two mining areas, totaling 10.6 Mt of Ore Reserves at 540 ppm U3O8 with an average strip ratio of 1.4:1.

The G pits consist of four mining areas, totaling 9.3 Mt of Ore Reserves at 436 ppm U3O8 with an average strip ratio of 1.9:1.

The J pits consist of four mining areas, totaling 20.8 Mt of Ore Reserves at 478 ppm U3O8 with an average strip ratio of 1.8:1.

The study considered the infrastructure requirements associated with the conventional contr ........


Crushing and Grinding
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Processing

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Summary:

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Projected Production:
Production Target 6.0Mlb U308 pa during the Mining Phase (Years 2 – 9) of the Project.

CommodityUnits201820172016201520142013Avg. AnnualLOM
Uranium (U3O8) M lbs 2.74.24.855.65.3677
All production numbers are expressed as U3O8.
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Operational Metrics:

Metrics201820172016
Annual milling capacity  ......  Subscription required
Annual mining rate  ......  Subscription required
Tonnes milled  ......  Subscription required2.95 Mt3.52 Mt3.57 Mt
Total tonnes mined  ......  Subscription required7.6 Mt24.6 Mt
* According to 2021 study.
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Reserves at November 4, 2021:
Mineral Resources reported at 200ppm U3O8 cut-off applied to in-situ mineral resources – 250ppm U3O8 cut-off applied to stockpiles.
Ore Reserves are reported at 250ppm U3O8 cut-off.

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven Stockpiles 26.5 Mt U3O8 369 ppm 21.6 M lbs
Proven In-Situ (OP) 48.3 Mt U3O8 488 ppm 52 M lbs
Probable In-Situ (OP) 10 Mt U3O8 464 ppm 10.2 M lbs
Proven & Probable Total 84.8 Mt U3O8 448 ppm 83.8 M lbs
Measured Total 105.6 Mt U3O8 430 ppm 100.2 M lbs
Measured Total 105.6 Mt V2O5 140 ppm 32.5 M lbs
Indicated Total 23.5 Mt U3O8 375 ppm 19.5 M lbs
Indicated Total 23.5 Mt V2O5 120 ppm 6.3 M lbs
Inferred Total 11 Mt U3O8 345 ppm 8.4 M lbs
Inferred Total 11 Mt V2O5 115 ppm 2.7 M lbs
Total Resource Total 140.1 Mt U3O8 415 ppm 128.1 M lbs
Total Resource Total 140.1 Mt V2O5 135 ppm 41.5 M lbs

Commodity Production Costs:

CommodityUnitsAverage201820172016
C1 cash costs U3O8 USD  ......  Subscription required&nbs 26.2 / lb   18.9 / lb   25.9 / lb  
* According to 2021 study / presentation.
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2021 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M USD  ......  Subscription required
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 7, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 4, 2021
....................... Subscription required ....................... Subscription required Subscription required Nov 4, 2021
....................... Subscription required ....................... Subscription required Subscription required Nov 7, 2022
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Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2020
Subscription required Subscription required Subscription required 2019
Subscription required Subscription required Subscription required 2018
Subscription required Subscription required Subscription required 2017
Subscription required Subscription required Subscription required 2016
Subscription required Subscription required Subscription required 2015
Subscription required Subscription required Subscription required 2014

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
Annual Review 2018
Annual Review 2017
Annual Review 2016
Annual Review 2015
Annual Review 2014
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