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Australia
Hillside Project

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 Location:
12 Km S from Ardrossan, South Australia, Australia

  Project Contacts:
68 St Vincent Highway
Pine Point
South Australia, Australia
5571
Phone  ...  Subscription required
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WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Copper
  • Gold
Mining Method
  • Truck & Shovel / Loader
Processing
  • Dewatering
  • Filter press plant
  • Flotation
Mine Life13 years (as of Jan 1, 2020)


Owners

Source: p. 1
CompanyInterestOwnership
Rex Minerals Ltd. (operator) 100 % Indirect
The Hillside Copper-Gold project is 100% owned by Rex Minerals Ltd.

Deposit Type

  • IOCG


Summary:

Following a drill campaign in 2008, numerous large-scale copper-gold intersections were identified at Hillside, leading to its discovery and recognition as an Iron-Oxide-Copper-Gold (IOCG) style deposit.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The open pit is value optimised and is designed in five phases. Rock movement is scheduled to ensure adequate operating area and access to ore.

After an initial pre-strip of 54Mt, the strip ratio for the operating life is 6.7:1 (waste:ore). Peak total rock haulage is 60Mtpa. Almost 90% of all material (ore and waste) will be mined with 550t hydraulic backhoe excavators, coupled with a fleet of ultra-class (296t) trucks, using the doublebenching method. Narrower ore zones will be mined with 250t backhoe excavators to minimise dilution and improve ore recovery. Peak material movement is achieved with a manageable maximum of 16 trucks.

The Project has a typical support fleet which includes drills, mid-sized graders, tracked and wheel dozers, front-end loaders and water and service trucks.


Crushing and Grinding
Flow Sheet: Source
Crusher / Mill TypeModelSizePowerQuantity
Jaw crusher 1
SAG mill 1
Stirred mill ....................... Subscription required 2


Processing

  • Dewatering
  • Filter press plant
  • Flotation

Flow Sheet: Subscription required

Summary:

The processing plant has a designed throughput capacity of 6 Mpta. It includes initial crushing and grinding before a first stage (rougher) flotation. This is followed by a fine grind and second stage (cleaner) flotation, before preparation for transport as a copper-gold concentrate.

The average copper grade of the copper concentrate is over 27% and the average annual copper concentrate produced over the first 12 years of operations is approximately 129,000t.

The layout for the processing plant allows for natural expansion capacity to a nominal 12Mtpa and the inclusion of an iron ore recovery circuit (if warranted), as per the conditions of the Mineral Lease.

Recoveries & Grades:

CommodityParameterAvg. LOM
Copper Recovery Rate, % 91.5
Copper Head Grade, % 0.66
Copper Concentrate Grade, % 27
Gold Recovery Rate, % 77.8
Gold Head Grade, g/t 0.17

Projected Production:

CommodityProductUnitsAvg. Annual
Copper Metal in concentrate t 35,000
Copper Concentrate kt 129
Gold Metal in concentrate oz  ......  Subscription required

Operational Metrics:

Metrics
Stripping / waste ratio  ......  Subscription required
Plant annual capacity  ......  Subscription required
Annual mining rate  ......  Subscription required
Annual ore mining rate  ......  Subscription required
* According to 2020 study.
Subscription required - Subscription is required.

Reserves at July 31, 2020:
Copper Resources reported above a 0.2% cut-off.

CategoryTonnage CommodityGradeContained Metal
Proven 42 Mt Copper 0.55 % 228,049 t
Proven 42 Mt Gold 0.19 g/t 250,454 oz
Probable 40 Mt Copper 0.7 % 281,213 t
Probable 40 Mt Gold 0.14 g/t 181,051 oz
Proven & Probable 82 Mt Copper 0.62 % 509,262 t
Proven & Probable 82 Mt Gold 0.16 g/t 431.504 oz
Total Resource 337 Mt Copper 0.6 % 1,967,600 t
Total Resource 337 Mt Gold 0.14 g/t 1,416,240 oz

Commodity Production Costs:

CommodityUnitsAverage
All-in sustaining costs (AISC) Copper USD  ......  Subscription required *†
C1 cash costs Copper USD  ......  Subscription required *†
Assumed price Copper USD  ......  Subscription required *
Assumed price Gold USD  ......  Subscription required *
* According to 2020 study / presentation.
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units2020
OP mining costs ($/t mined) AUD 2.18 *
OP mining costs ($/t milled) AUD  ......  Subscription required
Processing costs ($/t milled) AUD  ......  Subscription required
G&A ($/t milled) AUD  ......  Subscription required
Total operating costs ($/t milled) AUD  ......  Subscription required
* According to 2020 study.
Subscription required - Subscription is required.

2020 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Pre-Production capital costs $M AUD  ......  Subscription required
Total OpEx $M AUD  ......  Subscription required
Royalty payments $M AUD  ......  Subscription required
Gross revenue (LOM) $M AUD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M AUD  ......  Subscription required
Pre-tax NPV @ 5% $M AUD  ......  Subscription required
After-tax NPV @ 5% $M AUD  ......  Subscription required
After-tax IRR, %  ......  Subscription required
Subscription required - Subscription is required.

Proposed Heavy Mobile Equipment:
HME TypeSizeQuantityRef. Date
Excavator 550 t ....................... Subscription required Mar 25, 2021
....................... Subscription required ....................... Subscription required ....................... Subscription required Mar 25, 2021
....................... Subscription required ....................... Subscription required ....................... Subscription required Jul 28, 2020
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jun 30, 2021
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2020

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2020
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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