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Angola
Lulo Mine

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 Location:
273 km E from Melanje, Angola

  Regional Office:
34 Bagot Road
Subiaco
Western Australia, Australia
6008
Phone  ...  Subscription required
Fax+61-8-9380-9314
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Diamond
Mining Method
  • Truck & Shovel / Loader
Production Start...
Lulo is the highest US dollar per carat alluvial diamond operation in the world.

Commercial alluvial diamond mining operations commenced at Lulo in January 2015.


Owners

Source: p. 12
CompanyInterestOwnership
Rosas & Pétalas S.A. 28 % Indirect
Endiama E.P. 32 % Indirect
Lucapa Diamond Company Ltd. (operator) 40 % Indirect
Lucapa Diamond Company Ltd. - operator (40%);
Angolan Goverment - Endiama E.P. (32%);
Local partner - Rosas & Pétalas S.A. (28%).

Sociedade Mineira Do Lulo, Lda - owner mining operation.

Contractors

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Deposit Type

  • Alluvial / Placer
  • Kimberlite


Summary:

Lulo hosts a major kimberlite province and extensive diamond-bearing alluvial gravels.

Lulo lies within the ideal tectonic and stratigraphic setting where the Lucapa Graben crosses Angola’s most diamond rich Cuango basin. The Lucapa Graben is the same geological belt hosting most of Angola’s producing kimberlite mines, including neighbouring Catoca, the world’s fourth largest diamond mine.

Lulo hosts 296 kimberlite targets in two separate provinces, of which 96 have been classified as proven and probable kimberlites and four confirmed as diamond-bearing pipes.

Alluvial diamonds
Alluvial diamonds is the term used to describe diamonds that have been eroded from its primary source (ie from a kimberlite or lamproite intrusive host) and over time (millions of years) deposited in a new secondary environment such as gravels in a river bed, or off-shore.

Three different aged gravel horizons within the project area:
• Calonda Formation: a fluvial sedimentary sequence of Late Cretaceous age, largely accumulated as fan deposits and braided stream washes which formed around the time of the kimberlite eruptions in the area. Poorly-sorted diamondbearing basal gravel (0.3 - 4m in thickness) overlain by gritty sands and silts.
• Kalahari Formation: a gravel horizon at or near the base of the Kalahari Formation, largely wind-blown sand unit with fluvial components near the base. The gravel units contain abundant kimberlitic indic ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Lucapa and its Angolan partners Endiama and Rosas & Petalas commenced commercial alluvial diamond mining operations at Lulo in January 2015.

Alluvial mining and exploration activities at Lulo have until recently been focused primarily on the terrace deposits along a ~50km stretch of the Cacuilo River running through the ~3,000km2 concession, much of which remains untested.

However, through ongoing exploration programs, the Lulo partners recently discovered that in addition to the terraces, the previously-untested flood plains (leziria areas) along the Cacuilo River also host large and premium-quality diamonds.

A new Volvo and Caterpillar fleet of earthmooving equpment was purchases and arrived on site during 2019, comprising six excavators, eight trucks, two tracked dozers and a wheel dozer.

This additional fleet is part of an expansion program designer to deliver a ~50% increase annulisated in carat production in 2020.


Crushing and Grinding


Processing

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Summary:

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Production:

CommodityUnits2021202020192018201720162015
Diamond carats  ......  Subscription required  ......  Subscription required  ......  Subscription required19,19618,70619,8328,394
All production numbers are expressed as mineral.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Total tonnes mined  ......  Subscription required
Tonnes processed  ......  Subscription required  ......  Subscription required276,313 cu. m285,704 cu. m251,968 cu. m189,334 cu. m
Annual processing capacity  ......  Subscription required  ......  Subscription required1.1 Mt1.1 Mt
Subscription required - Subscription is required.

Reserves at December 31, 2021:
Lulo Alluvial Diamond Resource:
- The resource is reported as a diluted resource.
- Diluted volumes have been estimated based on historical mining production data to better reflect recoverable volumes and grades.
- Bottom cut-off screen size: effective 1.5mm.

CategoryTonnage CommodityGradeContained carats
Inferred 5,499,750 cu. m Diamond 0.0687 carats/cu.m 377,500 carats

Financials:

Units202120202019201820172016
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 26.4   31.6   51  
EBITDA M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -2   7.6  
Subscription required - Subscription is required



Heavy Mobile Equipment:
HME TypeModelQuantityRef. Date
Dozer (crawler) ....................... Subscription required Dec 31, 2019
Dozer (rubber tire) ....................... Subscription required Dec 31, 2019
Excavator ....................... Subscription required ....................... Subscription required Oct 14, 2015
Excavator ....................... Subscription required Dec 31, 2019
Truck (haul) ....................... Subscription required Dec 31, 2019
Truck (haul) ....................... Subscription required ....................... Subscription required Oct 14, 2015
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 6, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 6, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 6, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 6, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2021

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Annual Report 2017
Press Release 2017
Press Release 2017
Annual Report 2016
Project Description 2015
Subscription required - Subscription is required.

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