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Egypt
Sukari Complex (Sukari OP Mine, Sukari UG Mine)

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 Location:
21 km SW from Marsa Alam, Egypt

  Regional Office:
361 EI Horreya Road Sedi Gaber
Alexandria
Egypt
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Fax+20-(0)3522-6350
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit / Underground
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
  • Longhole stoping
  • Avoca
  • Room-and-pillar
Processing
  • Flotation
  • ROM/dump leach
  • Agitated tank (VAT) leaching
  • Concentrate leach
  • Carbon in leach (CIL)
  • Elution
  • Carbon adsorption-desorption-recovery (ADR)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)
Mine Life16 years (as of Jan 1, 2020)
Sukari a large-scale low-cost open pit and underground mine


Owners & OPERATOR

Source: p. 42
CompanyInterestOwnership
Barminco Holdings Pty Ltd. (operator)
Centamin plc. 50 % Indirect
Egyptian Mineral Resource Authority 50 % Indirect
Underground Mining Contractor: Barminco

Deposit Type

  • Porphyry


Summary:

Gold mineralization at Sukari is hosted exclusively by porphyry. The lack of significant gold grades in chemically reactive serpentinitic wall rocks can be explained in one of two ways:

• The porphyry represented a favourable host either because of its composition, relative to mineralising fluids, or its mechanical properties or both.

• The Sukari Porphyry was relocated, relative to wall rock sequences, by faulting after gold mineralization.

While significant post-mineralization faulting has possibly occurred, the second scenario is unlikely. Porphyry dykes in the hangingwall of the main porphyry body show gold mineralization of essentially the same character as that in the main porphyry and wall rocks immediately adjacent to those dykes are also barren. Those dykes range in thickness from a few centimetres to several metres. It is not reasonable to postulate that they, along with the main porphyry body, were all relocated by faulting after mineralization.

Certainly it is evident that the Sukari Porphyry has acted as a rigid body surrounded by weaker rocks. Footwall and hangingwall rocks have taken up strain by development of strong schistosity, almost certainly accompanied by large decreases in volume. The porphyry has taken up strain by development of predominantly brittle fault structures.

The porphyry host for the mineralization has a strike length of approximately 2,300 m, and ranges in thickness from 100 m to approximately 600 m (Cavaney 2005). Gold mineralization within this is not continuous and its deposition has been influenced by major long-lived structures, the most important of which are tabular sheets of crackle breccia.


Mining Methods

  • Truck & Shovel / Loader
  • Longhole stoping
  • Avoca
  • Room-and-pillar


Summary:

Ore and waste are mined using conventional open pit mining methods. The operation utilises selective mining techniques to separate ore and waste. Provision has been made for drilling and blasting all primary and oxide materials.

The Sukari underground mine is a trackless diesel mine, with all equipment rubber tyred and self- powered. The workings are accessed via a ramp system declining at a gradient of 1 in 7. Levels are typically developed at 15 metre vertical intervals, although this is dependent on orebody geometry and mining method.

Mining method: Long-hole stoping, room and pillar, avoca modified.


Crushing and Grinding


Processing

  • Flotation
  • ROM/dump leach
  • Agitated tank (VAT) leaching
  • Concentrate leach
  • Carbon in leach (CIL)
  • Elution
  • Carbon adsorption-desorption-recovery (ADR)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)

Flow Sheet: Subscription required

Summary:

The process route encompasses:
• Crushing
• Stockpiling crushed ore
• Grinding
• Flotation of a bulk sulphide concentrate
• Thickening of the concentrate and the flotation tailings
• Fine milling of the concentrate
• Leaching the precious metals from the concentrate and/or flotation tailings in a dilute cyanide solution
• Adsorbing the precious metals onto activated carbon
• Eluting (or desorbing) the precious metals from the carbon
• Recovering the precious metals as gold doré
• Combining the flotation tailings and leached concentrate and pumping to the TSF.

Recoveries & Grades:

CommodityParameter20192018201720162015
Gold Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Head Grade, g/t 1.281.261.571.651.4
Subscription required - Subscription is required.

Production:

CommodityUnits202020192018201720162015
Gold oz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required544,658551,036439,072
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202020192018201720162015
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required11,559 kt10,575 kt
Stripping / waste ratio  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required4.68 5.6
Annual processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
Subscription required - Subscription is required.

Reserves at July 18, 2019:

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven & Probable In-Situ (UG) 4 Mt Gold 4.7 g/t 0.6 M oz
Proven & Probable Stockpiles 20.9 Mt Gold 0.5 g/t 0.3 M oz
Proven & Probable In-Situ (OP) 163.6 Mt Gold 1.1 g/t 6 M oz
Proven & Probable Total 188.4 Mt Gold 1.1 g/t 7 M oz
Measured & Indicated Total 321 Mt Gold 1.01 g/t 10.3 M oz
Inferred Total 12 Mt Gold 1.49 g/t 0.59 M oz

Commodity Production Costs:

CommodityUnits202020192018201720162015
Cash costs Gold USD  ......  Subscription required ^  ......  Subscription required  ......  Subscription required 554 / oz 513 / oz 713 / oz
Cash costs (sold) Gold USD  ......  Subscription required  ......  Subscription required 577 / oz
All-in sustaining costs (sold) Gold USD  ......  Subscription required ^†  ......  Subscription required†  ......  Subscription required† 790 / oz† 694 / oz† 885 / oz†
^ Guidance / Forecast.
† Net of By-Product.
Subscription required - Subscription is required.

Financials:

Units202020192018201720162015
Capital expenditures (planned) M USD  ......  Subscription required
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 36.5  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 508.4  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 92.2  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 58.4  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 51.6  
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jun 28, 2020
....................... Subscription required ....................... Subscription required Subscription required Jun 28, 2020
....................... Subscription required ....................... Subscription required Subscription required Jun 28, 2020
....................... Subscription required ....................... Subscription required Subscription required Jun 28, 2020
....................... Subscription required ....................... Subscription required Subscription required Jun 28, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
Annual Report 2017
Press Release 2017
Annual Information Form 2016
Annual Report 2016
Corporate Presentation 2016
Management Discussion & Analysis 2016
Technical Report 2015
Technical Report 2010
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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