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Zambia
Lubambe Mine

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 Location:
10 km NW from Chililabombwe, Zambia

  Address:
2 Shaft, Chimfushi Road Chililabombwe
PO Box 11215
Chingola
Zambia
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Copper
Mining Method
  • Longitudinal Room-and-Pillar
  • Longitudinal retreat
Production Start...
Mine Life10 years (as of Jan 1, 2021)
There is currently a 10-year mine life at Lubambe, excluding the Extension Project which has the potential to extend the mine’s life by a further 50 years.


Owners

Source: p. 1
CompanyInterestOwnership
ZCCM Investments Holdings Plc. 20 % Indirect
EMR Capital Group 80 % Indirect
Lubambe Copper Mine Ltd. (operator) 100 % Direct
The Lubambe Copper Mine is 80% owned by EMR Capital Resources, while 20% is held by ZCCM Investments Holdings Plc.

Contractors

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Deposit Type

  • Sediment-hosted


Summary:

The Lubambe copper deposit is one of approximately 30 copper/cobalt deposits occurring within the Central African Copperbelt. It is located at the north-western extremity of the Zambian portion of the Copperbelt. The deposit is hosted within sediments that accumulated in an intracratonic rift, which was subsequently closed during the Lufi lian Orogeny. The deposit mineralisation is defi ned as the ore shale (OS) type of mineralisation. Copper mineralisation is largely hosted within the OS1 Member, whose true thickness varies from 3 to 14 metres. The lower-most 1.5 metres of the OS1 Member contains very little copper, due to leaching which preferentially occurs at the base of the OS1 where the contact between the siltstone and conglomerate/arkose represents a permeability channelway. The transition to greater than 1% total copper (TCu) is abrupt and takes place over centimetres, above a thin red iron oxide-rich marker layer, which probably acted as a redox boundary. The upper contact of the greater than 1% total copper zone (assay hanging wall) is also well-defi ned in the assay profi le, but is not as sharp as the assay footwall contact.

Mineralisation occurs as finely disseminated sulphides along bedding planes and cleavage, in thin veinlets, and in lenticles and stringers, comprising of chalcocite, chalcopyrite, bornite, digenite, covellite, pyrite and carrollite. A large proportion of the nonsulphide copper minerals occur along fractures and veins and consist of ........


Mining Methods

  • Longitudinal Room-and-Pillar
  • Longitudinal retreat


Summary:

Lubambe is an underground operation utilising the Longitudinal Room and Pillar mining method.

The current mining method employed is a variant of room and pillar ‘modified room and pillar’ which also falls under open stoping methods (unsupported underground mining methods).This method has stope designs of 20-25 m with 6m rib pillars and 5m sill pillars that are not designed to hole.

The mining sequence of modified room and pillar is as follows:
- the excavation is mined to completion for ore development with primary support installed;
- thereafter secondary support is installed;
- production drilling commences, and
- lastly stoping is conducted.

The firing sequence used has the following sequence:
- Ring 1 is fired;
- Rings 2 and 3 are taken together;
- Ring 4 to the last ring in the panel are fired in a mass blast.

This firing sequence is adopted for the whole mine but subject to change upon geotechnical recommendation if there are ground condition issues in the area.

Lubambe Studying Alternative Mining Method
The current mining method of Longhole retreat stoping in the flatter dipping (<40) areas is not entirely appropriate, due to in the high dilution that it attracts and the low dip angle affecting ore recovery. The proposed mining method Inclined Room and Pillar (IRP) for these flatter areas is more selective and would target a higher production grade by reducing waste diluti ........


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityProductUnits202120202019201820172016
Copper Metal in concentrate t  ......  Subscription required  ......  Subscription required  ......  Subscription required23,68918,29920,973
Copper Concentrate kt 4551
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Operational Metrics:

Metrics202120202019201820172016
Total tonnes mined  ......  Subscription required  ......  Subscription required
Ore tonnes mined  ......  Subscription required  ......  Subscription required1,693,854 t1,316,109 t1,005 kt1,221 kt
Waste  ......  Subscription required  ......  Subscription required
Tonnes milled  ......  Subscription required  ......  Subscription required1,677,690 t1,013 kt1,277 kt
Annual processing capacity  ......  Subscription required  ......  Subscription required
Annual production capacity  ......  Subscription required  ......  Subscription required45,000 t of copper metal in concentrate
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Reserves at June 30, 2017:
The 2019 Lubambe Extension Resource Statement recorded a JORC-compliant resource of 206 Mt @ 3.69 % TCu. An exploration drilling campaign completed early 2020 tested the continuity of the resource to the north-east. This work has already grown the resource by 20 %, adding ~1.4 Mt of contained copper metal and producing an updated Resource Statement of 247 Mt @ 3.64 % TCu. The updated resource also contains ~ 100 kt of cobalt with no meaningful deleterious elements.

CategoryTonnage CommodityGradeContained Metal
Proven 7 Mt Copper 2.18 % 0.15 Mt
Probable 34 Mt Copper 2.12 % 0.73 Mt
Proven & Probable 41 Mt Copper 2.13 % 0.87 Mt
Measured 8.9 Mt Copper 2.5 % 0.22 Mt
Indicated 41.7 Mt Copper 2.41 % 1.01 Mt
Measured & Indicated 50.6 Mt Copper 2.43 % 1.23 Mt
Inferred 25.8 Mt Copper 1.97 % 0.51 Mt

Commodity Production Costs:

CommodityUnits20172016
C1 cash costs Copper USD 2.45 / lb   2.41 / lb  

Financials:

Units20202019201820172016
Capital expenditures M USD 8  
Revenue M USD  ......  Subscription required  ......  Subscription required 54.2   83.6  
After-tax Income M USD  ......  Subscription required  ......  Subscription required -36.7  



Heavy Mobile Equipment:
HME TypeModelQuantityRef. Date
Drill ....................... Subscription required ....................... Subscription required Jun 30, 2019
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required Mar 22, 2019
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required Jun 30, 2019
Truck (dump) ....................... Subscription required ....................... Subscription required Jun 30, 2019
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 27, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 27, 2022
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....................... Subscription required ....................... Subscription required Subscription required Sep 27, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 27, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 23, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 27, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 27, 2022
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Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required 2021
Subscription required Subscription required Subscription required 2019
Subscription required 2017
Subscription required Subscription required 2016
Subscription required Subscription required 2015
Subscription required Subscription required 2014

Corporate Filings & Presentations:

DocumentYear
Other 2022
Other 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
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................................... Subscription required 2019
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................................... Subscription required 2019
Annual Report 2018
Annual Report 2017
Year-end Mineral Reserves 2017
Annual Report 2016
Form 20-F 2016
Annual Report 2015
Form 20-F 2015
Year-end Mineral Reserves 2015
Annual Report 2014
Fact Sheet 2013
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