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Angola
Somiluana Mine

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 Location:
70 km NE from Lucapa, Angola

  Address:
Rua Fernao Mendes Pinto, No.27-A
Luanda
Angola
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  • Overview
  • Owners
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Diamond
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life10 years (as of Jan 1, 2016)
Trans Hex Group Ltd was delisted from the JSE in 2019.

Production numbers have not been publicly available since 2020.


Owners

Source: p. 61
CompanyInterestOwnership
Trans Hex Group Ltd. 33 % Indirect
Endiama E.P. 39 % Indirect
Trans Hex holds a 33% stake in the Mine, while Endiama, the state diamond company, holds a 39% stake; the balance of the shares is collectively held by three local companies.

Contractors

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Deposit Type

  • Kimberlite


Summary:


Mining Methods

  • Truck & Shovel / Loader


Summary:

Ore is mined using open pit mining methods from numerous small, localised alluvial gravel resources. Mining is carried out with open pit truck and shovel operations from the diamondiferous gravels after removal of overburden. The general method employed is strip mining. The paleo-channels and terraces which host the diamondiferous gravels vary in width and overburden depth and, as such are subject to varying degrees of continuity for active mining faces. Mining also encompasses rehandling and reprocessing of remnant tailings and stockpiled material. The mining fleet is consistent across these operations, with the exception of the dredging operations undertaken at Shallow Water.

A low cost mining approach is also bein followed on the Somiluana Mine in Angola and current mine plans are based on a feasibility study founded on analysis of historical Diamang data and six years of exploration and pilot production results to which appropriate planning, scheduling, and reserving methodologies have been applied that are typical for large scale alluvial mining operations in Angola.

Overburden at Somiluana comprises amorphous or silicified gravel and sand, with few or no rocks, and is easily excavated with general service excavator buckets with or without teeth. Explosives are not required. In some areas, sandier overburden requires a shallower batter angle of maximum 30° and reduced bench height. In other areas, more stable overburden with higher clay content will ........


Crushing and Grinding


Processing

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Summary:

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Production:

CommodityUnits20202019201820172016
Diamond carats  ......  Subscription required  ......  Subscription required136,402137,21999,572
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Reserves at December 31, 2019:
Somiluana grades are reported as run-of-mine (ROM) grades, i.e. bulk and diluted at a bottom screen cut-off of 1.6 mm.

CategoryTonnage CommodityGradeContained carats
Proven 346,081,595 cu. m Diamond 0.3684 carats/cu.m 5,327,133 carats
Indicated 444,806,165 cu. m Diamond 0.5006 carats/cu.m 7,545,658 carats
Inferred 610,675,608 cu. m Diamond 0.1485 carats/cu.m 4,473,312 carats



Heavy Mobile Equipment:

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 is required.

Staff:

Total WorkforceYear
Subscription required 2017

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Fact Sheet 2018
Annual Report 2017
Annual Report 2017
Annual Information Form 2016
Subscription required - Subscription is required.

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