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Tanzania
Buzwagi Mine

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 Location:
8 km E from Kahama, Tanzania

  Regional Office:
Tan House Tower, Plot Number 34/1 Ursino South, New Bagamoyo Road Post Office Box 1081
Dar Es Salaam
Tanzania
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Filings & News

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Overview

StatusClosing / Closed
Mine TypeStockpile
Commodities
  • Gold
  • Copper
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2021
With the end of mining at Buzwagi in the third quarter of 2021, as previously reported, Barrick has ceased to include production or non-GAAP cost metrics for Buzwagi from October 1, 2021 onwards.

Updated Mine Closure Plan submitted to the Mining Commission - approval pending.
Progressive rehabilitation has progressed and the process plant cleaned and fully decontaminated.


Owners

Source: p. 19-20
CompanyInterestOwnership
Government of Tanzania 16 % Indirect
Barrick Gold Corp. 84 % Indirect
Twiga Minerals Corporation Ltd. (operator) 100 % Direct
On September 17, 2019, Barrick acquired all of the Acacia Mining plc. Acacia became a wholly-owned subsidiary of Barrick called Barrick TZ Limited.

On January 24, 2020, Barrick announced that the Company had ratified the creation of Twiga Minerals Corporation (“Twiga”), the operating company formed to manage the Tanzania mines. Effective January 1, 2020, the GoT received a free carried shareholding of 16% in each of Barrick’s Tanzanian mines (Bulyanhulu, Buzwagi and North Mara).

Contractors

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Deposit Type

  • Vein / narrow vein
  • Porphyry


Summary:

Buzwagi is shear-hosted quartz-veined deposit hosted in porphyritic granite. It is found in Nzega belt in the lower portion of the Nyanzian system. This belt is composed of basalt and intermediate volcanic intruded by granitoid masses which is dominated by deep-seated structure.

The granite that hosts the majority (85%) of the Buzwagi deposit is a medium to coarse feldspar granite with zone orthoclase crystals up to 4cm. This is predominantly underlain by medium- to coarse-grained granite intruding mafic flow and pillow flow basalts, within which there are two other distinctive units, including a tonalite silt-like body, which is occasionally mineralised with quartz veining, sericite alteration and sulphide mineralisation. Rock units dip to the east at c 60° in the southern portion of the lease area and 65-75° in the northern portion.

Several faults traverse the Buzwagi area. The most significant orientation of faulting is northwestsouth-east, parallel or sub-parallel to the Nzega shear (and probably related to it).

The Buzwagi deposit is hosted within or near a north-south brittle-fracture shear corridor that is up to 450m wide and includes two ore types: shear-hosted, porphyry-hosted.

As such, Buzwagi has been separated into 12 structural domains, within which mineralisation is segregated.

Domain 1 (which accounts for up to 50% of Buzwagi’s in-situ gold) is up to 1,000m long and 30m wide (subject to pinching and swellin ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Buzwagi site is located in north-western Tanzania, East Africa. Buzwagi is the second largest mining operation in Tanzania and the largest single open pit in the country, which is one of the fastest emerging gold producers in Africa and the continent’s third-largest gold producer after South Africa and Ghana.

Buzwagi will continue to process stockpiles until mid-2021. Following completion of the mining of the final cut at the bottom of the pit in the first quarter of 2019, the mill feed will be exclusively from stockpiles.

An owner-operated fleet is used in mining. There are three excavators, fifteen 150-tonne haul trucks and three blast hole rigs.


Crushing and Grinding
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Processing

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Summary:

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Production:
With the end of mining at Buzwagi in the third quarter of 2021, as previously reported, Barrick has ceased to include production or non-GAAP cost metrics for Buzwagi from October 1, 2021 onwards.

CommodityProductUnits202120202019201820172016
Gold Metal in doré koz  ......  Subscription required  ......  Subscription required  ......  Subscription required145
Gold Metal in conc./ doré koz 269162
Copper Metal in concentrate k lbs  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Tonnes processed  ......  Subscription required  ......  Subscription required3,422 kt4,526 kt4,256 kt4,404 kt
Total tonnes mined  ......  Subscription required  ......  Subscription required105 kt479 kt15,368 kt21,585 kt
Ore tonnes mined  ......  Subscription required  ......  Subscription required45 kt391 kt9,309 kt5,317 kt
Waste  ......  Subscription required  ......  Subscription required59 kt
Annual processing capacity  ......  Subscription required  ......  Subscription required4.4 Mt4.4 Mt
Daily processing capacity  ......  Subscription required  ......  Subscription required12,000 t12,000 t12,000 t
Stripping / waste ratio  ......  Subscription required  ......  Subscription required2
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Reserves at December 31, 2020:

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven & Probable Total 2 Mt Gold 0.76 g/t 0.05 M oz
Measured Total 2 Mt Gold 0.76 g/t 0.05 M oz
Indicated Total 4 Mt Gold 1.25 g/t 0.17 M oz

Commodity Production Costs:

CommodityUnits202120202019201820172016
Cash costs (sold) Gold USD 906 / oz†   594 / oz†   1,031 / oz†  
Total cash costs Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Total cash costs Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†
All-in sustaining costs (AISC) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
All-in sustaining costs (AISC) Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†
All-in sustaining costs (sold) Gold USD 977 / oz†   667 / oz†   1,095 / oz†  
All-in costs Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
All-in costs Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†
† Net of By-Product.
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Operating Costs:

Units202120202019
OP mining costs ($/t mined) USD 8.32
Processing costs ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
G&A ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
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Financials:

Units20212020201820172016
Capital expenditures M USD  ......  Subscription required -2.2   2.4   8.1  
Sustaining costs M USD  ......  Subscription required 3.5   4.3   3.6  
Revenue M USD  ......  Subscription required 186.8   206.3   223.3  
EBIT M USD 43.2   86   14.6  
EBITDA M USD 45.7   90.3   27.2  
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Heavy Mobile Equipment:

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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Annual Report 2017
Quarterly Report 2017
Annual Report 2016
Project Description 2015
Annual Report 2014
Project Description 2014
Press Release 2011
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