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Papua New Guinea
Ok Tedi (Mt. Fubilan) Mine

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 Location:
12 km NW from Tabubil, Papua New Guinea

  Address:
1 Dakon Road
Tabubil
Papua New Guinea
332
Phone  ...  Subscription required
Fax+675-649-9199
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Copper
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Processing
  • Flotation
Mine Life2025


Owners

Source: p. 6, 22
CompanyInterestOwnership
Ok Tedi Mining Ltd. 100 % Direct

Deposit Type

  • Porphyry
  • Skarn


Summary:

The Ok Tedi mining operations are centred on the Mt Fubilan deposit in the upper Fly River catchment in the remote Star Mountains, Western Province.

Mt Fubilan is a rich coppergold-silver deposit with several phases of mineralisation centred on two intrusions, known as the Fubilan monzonite porphyry, located in the northern half or Centre Pit area and the Sydney monzodiorite stockworks with subsequent alteration in the south. Majority of the ore is found in the sulphide skarns, located adjacent to the intrusions along the contacts with the limestone and siltstone units.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Mining of the Mt Fubilan Ore Reserves is carried out as a large open pit operation. In March 2016, a pit wall failure located in the West Wall interrupted access to lower levels in the pit. The collapsed material caused a blockage in the pit floor underdrainage system resulting in the lower levels of the pit becoming submerged.

Ore is mined and transported to a primary crusher as first stage processing or to a Run of Mine (ROM) stockpile, where blending of various ore types can take place. Waste rock is characterised according to its Acid Rock Drainage (ARD) potential and disposed of in the Taranaki, Harvey Creek, Paris, Moscow or Vancouver waste dumps. Limestone waste rock is selectively dumped together with potential ARD waste rock to neutralise any acid generation.

Mining is conducted using conventional drill and blast techniques, with shovel and excavator loading equipment. The company has completed an upgrade of its mining equipment, standardising on Caterpillar equipment including 33 trucks (793F), eight trucks (789C), four loading shovels (6050) and four excavators (6030) and ancillary equipment. A fifth shovel (6050) was commissioned in January 2017. The mine uses the Modular PTX Dispatch fleet management system to optimise movements.


Processing Technologies

  • Flotation


Summary:

The deposit is mined as a large open pit with a flotation processing plant capable of treating up to 24 million tonnes per annum (Mtpa), and currently recovering copper and gold into a saleable concentrate using conventional technology. The concentrate product contains approximately 25% copper with gold content in the range of 15 to 25 g/t. Copper concentrate is piped 156 kilometres (km) south to the Kiunga port facilities located on the Fly River. The concentrate is dried, stored, blended and then shipped by barge down the Fly River to Port Moresby where it is transferred to a silo and storage vessel before being exported overseas.

The ore is crushed in a primary crusher at a nominal 8,000 tonnes per hour (tph) and conveyed to a primary ore stockpile. The primary ore is then ground (two trains each comprising a SAG mill and two ball mills) to a final grain size of approximately 180 microns. This material is treated in a twin parallel standard mineral flotation circuit to produce a copper, gold and silver concentrate of approximately 25% copper and between 15 and 25 g/t gold. A portion of gold is also separately captured utilising a gravity gold circuit. The concentrate is thickened and piped as slurry to handling facilities at Kiunga where it is filtered, dried and prepared for shipping.

Recoveries & Grades:

CommodityParameter2017201620152014
Copper Recovery Rate, % 83.585.885.483.8
Copper Head Grade, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Head Grade, g/t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper Concentrate Grade, %  ......  Subscription required
Subscription required - Subscription is required.

Production:

CommodityProductUnits2017201620152014
Copper Concentrate kt  ......  Subscription required  ......  Subscription required186308
Copper Metal in concentrate kt  ......  Subscription required  ......  Subscription required4576
Gold Metal in concentrate koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Metal in concentrate koz  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics2017201620152014
Total tonnes mined  ......  Subscription required58.1 Mt42.6 Mt68 Mt
Tonnes milled  ......  Subscription required16.1 Mt11.8 Mt16.8 Mt
Annual processing capacity  ......  Subscription required24 Mt
Ore tonnes mined  ......  Subscription required16.8 Mt
Stripping / waste ratio  ......  Subscription required2.46 3.27
Subscription required - Subscription is required.

Reserves at December 31, 2017:

CategoryTonnage CommodityGrade
Proven 156 Mt Copper 0.6 %
Proven 156 Mt Gold 0.69 g/t
Probable 80 Mt Copper 0.58 %
Probable 80 Mt Gold 0.7 g/t
Proven & Probable 235 Mt Copper 0.59 %
Proven & Probable 235 Mt Gold 0.69 g/t
Measured 365 Mt Copper 0.47 %
Measured 365 Mt Gold 0.53 g/t
Indicated 372 Mt Copper 0.43 %
Indicated 372 Mt Gold 0.5 g/t
Inferred 44 Mt Copper 0.51 %
Inferred 44 Mt Gold 0.71 g/t
Total Resource 782 Mt Copper 0.45 %
Total Resource 782 Mt Gold 0.53 g/t

Commodity Production Costs:

CommodityUnits2017201620152014
Credits (by-product) Copper USD  ......  Subscription required -1.55 / lb -1.95 / lb
C1 cash costs Copper USD  ......  Subscription required  ......  Subscription required 4.81 / lb 3.59 / lb
C1 cash costs Copper USD  ......  Subscription required† 3.26 / lb† 1.64 / lb†
† Net of By-Product.
Subscription required - 'Investor' subscription is required.

Operating Costs:

Units2017
OP mining costs ($/t mined) USD 1.97

Financials:

Units201720162015
Capital expenditures M PGK  ......  Subscription required  ......  Subscription required
Revenue M PGK  ......  Subscription required  ......  Subscription required 1,098  
Operating Income M PGK  ......  Subscription required  ......  Subscription required 520.14  
Pre-tax Income M PGK  ......  Subscription required  ......  Subscription required -480.58  
After-tax Income M PGK  ......  Subscription required  ......  Subscription required -346.95  
Subscription required - Subscription is required.


Heavy Mobile Equipment as of December 31, 2016:
HME TypeModelQuantity
Excavator ....................... Subscription required 4
Shovel ....................... Subscription required 5
Truck (haul) ....................... Subscription required 33
Truck (haul) ....................... Subscription required 8
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 25, 2019
....................... Subscription required ....................... Subscription required Subscription required Oct 16, 2019
....................... Subscription required ....................... Subscription required Subscription required Sep 25, 2019
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2016

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2017
................................... Subscription required 2016
Subscription required - Subscription is required.

Aerial view:

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