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Zimbabwe
Trojan Mine

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 Location:
5 km SW from Bindura, Zimbabwe

  Address:
No 1 Trojan Mine Road
Bindura
Zimbabwe
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  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Nickel
Mining Method
  • Sub-level caving
Production Start...
Mine Life8 years (as of Jan 1, 2022)
Trojan Nickel Mine Limited consists of two mines which are, Trojan Mine and Shangani Mine. Trojan Mine, located in Bindura was restarted in 2012 after 4 years of care and maintenance. Shangani Mine is currently under care and maintenance. TNML’s smelter and refinery are currently under care and maintenance. The smelter has the capacity to treat BNC and third-party concentrates.


Owners

Source: p. 11
CompanyInterestOwnership
Bindura Nickel Corporation Ltd. 100 % Indirect
The Trojan nickel mine is owned by Bindura Nickel Corporation (BNC) wholly-owned subsidiary Trojan Nickel Mine Limited (TNM).

Contractors

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Deposit Type

  • Metamorphic


Summary:

The nickel sulphide deposit at Trojan Mine occurs within a pile of ultramafic lavas subjected to a lower amphibolite grade of metamorphism and are characterised by lensoidal bodies of serpentinite. The lavas form part of the Upper Greenstones (Bulawayan Group) of the Mazowe greenstone belt. The serpentinite bodies are separated from each other by cherts, BIFs, graphitic shales and felsic volcanics. The footwall and hanging wall of the nickel bearing serpentinites are formed by komatiitic and tholeiitic basalts. A doleritic dyke cuts through the serpentinites and displays nickel sulphide along its sheared contact. The regional setting and deformation of the Harare-Bindura schist belt with thrusting and doming of the Chinamora batholith has given rise to the deformation imprint observed in host rocks at the mine. The general strike of the ore bodies is east–west and dip steeply (75° to 85°) to the north and this is controlled by the regional foliation trend. The two major ore bodies are the Main Orebody and the Hanging Wall Orebody. The massive and near massive ores occupy a narrow and discontinuous zone along the footwall of the Main Orebody and this is called the Footwall Massive Orebody. The Main Orebody is the largest, and averages 250m long and 30m wide. There are other smaller ore bodies such as Trojan Hill, Cardiff East and Cardiff Far East, with dimensions of 100m x 15m and 200m x 15m respectively. Drilling has outlined the Main Orebody to a depth of 1180m below surface ........


Mining Methods

  • Sub-level caving


Summary:

Trojan Mine employs a sub-level caving mining method to extract ore from the Main Orebody; and the Hanging Wall Ore body that are steeply dipping (some 75-85o) and separated by a barren zone some 50m in thickness. The ore bodies are accessed from drives installed in the foot wall on levels developed from a sub-vertical shaft system, from 7L to 35L (the lowest working level and some 1,130m below surface), that is used to hoist rock and transport men and material to the workplaces. Main levels are installed at 60m intervals and comprise a tracked haulage. Sub-levels are installed at 15m intervals from a footwall ramp that is developed between main levels. Currently mining is being conducted between 29L and 31L and the average historical drop down rate is equivalent to some 35m vertical per year. This rate is forecast to increase as the future footprint of the ore body decreases. The stoping operation is fully trackless using long-hole drill rigs and LHDs for all cleaning. Development is partially mechanised with some hand held drilling but all cleaning is by LHD. Trojan Mine completed and successfully commissioned the Shaft Re-deepening Project during an almost 8-week long shutdown from March to April of 2021. The Shaft Re-deepening Project involved two major components, namely: -The Shaft Re-deepening and Tie-in. This was the deepening of the existing sub-vertical shaft by 244 metres, to enable access to known ore resources below the then existing shaft bottom, and -The Su ........


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityUnits2022202120202019201820172016
Nickel t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required6,6206,7626,621
All production numbers are expressed as metal in concentrate.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required444,240 t378,824 t432,843 t
Tonnes milled  ......  Subscription required  ......  Subscription required  ......  Subscription required443,876 t390,211 t440,619 t
Annual milling capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
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Reserves at March 31, 2022:
Mineral Resources are reported based on a 0.45%Ni cut-off grade.

CategoryTonnage CommodityGradeContained Metal
Proven 0.84 Mt Nickel 0.64 % 5.3 kt
Probable 0.7 Mt Nickel 0.73 % 5.2 kt
Proven & Probable 1.54 Mt Nickel 0.68 % 10.5 kt
Measured 4.06 Mt Nickel 0.98 % 39.8 kt
Indicated 4.92 Mt Nickel 1.08 % 53.4 kt
Measured & Indicated 8.98 Mt Nickel 1.04 % 93.2 kt
Inferred 3.52 Mt Nickel 1.07 % 37.6 kt
Total Resource 12.5 Mt Nickel 1.05 % 130.9 kt

Commodity Production Costs:

CommodityUnits20222021202020192017
C1 cash costs Nickel USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
C2 total cash costs Nickel USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
C3 fully allocated costs Nickel USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 5,631 / t  
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Financials:

Units2022202120202019201820172016
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 13   15.3  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 53.6   45.1   42.3  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 8.9   2.4   1.8  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 18.9   14   9.1  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 7.9   1.4   1.2  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 5.8   0.6   0.6  
Operating Cash Flow M USD  ......  Subscription required  ......  Subscription required
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Dec 31, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 11, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 11, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 11, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 11, 2022
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2022
Subscription required 2021
Subscription required 2020

Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Financial Review 2022
................................... Subscription required 2021
................................... Subscription required 2020
Financial Review 2017
Annual Report 2016
Annual Report 2014
Technical Report 2007
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