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Australia
Koolan Island Mine

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 Location:
140 km N from Derby, Western Australia, Australia

  Regional Office:
Level 1, 2 Kings Park Rd
PO Box 55
West Perth
Western Australia, Australia
6005
Phone  ...  Subscription required
Fax+61 8 9485 2305
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Iron (hematite)
Mining Method
  • Truck & Shovel / Loader
Mine Life6 years (as of Jan 1, 2019)
July 15, 2019 - Mount Gibson Iron has reported a positive restart to production at the Koolan Island operation
Latest NewsMount Gibson restart at Koolan Island makes the grade     July 15, 2019


Owners

 
CompanyInterestOwnership
Mount Gibson Iron Ltd. 100 % Direct

Deposit Type

  • Sandstone


Summary:

Iron mineralisation in the form of hematite rich sandstones is developed in the Yampi Member at or close to an unconformity with the underlying Elgee Siltstone on Koolan Island.

The Main Deposit comprises a tabular body of high grade mineralisation 1.8 km long which is between 25 m and 30 m thick and characterised by consistently high grades (>67% Fe) with very low levels of impurities. The deposit was developed by BHP and has been mined to a depth of 80 m below sea level.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Mining at Koolan Island will be by open pit method using conventional drill and blast, truck and excavator equipment. As the open pit is already established, there is minimal development work required and the ramp up to commercial production is anticipated to be achieved within 4 months of the recommencement of mining.


Crushing and Grinding


Processing


Summary:

There are no changes required to the existing processing facility at Koolan Island. Regular maintenance checks have been conducted during the care and maintenance period, together with a major overhaul of the primary crusher.

The metallurgical characteristics of the Main pit ore are well known from previous mining and processing from 2007 to 2014, and offtake contracts remain in place for all of Koolan Island's planned future production volumes.


Production:

CommodityUnits20192016
Iron (hematite) Mt  ......  Subscription required1.2
All production numbers are expressed as lump & fines.
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920162015
Ore tonnes mined  ......  Subscription required1,381 kwmt1,643 kwmt
Waste  ......  Subscription required3,322 kwmt14,428 kwmt
Subscription required - Subscription is required.

Reserves at December 31, 2019:

CategoryTonnage CommodityGrade
Proven 0.1 Mt Iron 63.4 %
Proven 0.1 Mt Silica 7.25 %
Proven 0.1 Mt Al2O3 1.11 %
Probable 20.9 Mt Iron 65.5 %
Probable 20.9 Mt Silica 4.53 %
Probable 20.9 Mt Al2O3 0.88 %
Proven & Probable 21 Mt Iron 65.5 %
Proven & Probable 21 Mt Silica 4.58 %
Proven & Probable 21 Mt Al2O3 0.89 %
Measured 3.71 Mt Iron 60.2 %
Measured 3.71 Mt Silica 13.29 %
Measured 3.71 Mt Al2O3 0.3 %
Indicated 38.23 Mt Iron 65.1 %
Indicated 38.23 Mt Silica 5.48 %
Indicated 38.23 Mt Al2O3 0.65 %
Inferred 9.97 Mt Iron 60.6 %
Inferred 9.97 Mt Silica 12.21 %
Inferred 9.97 Mt Al2O3 0.59 %

Financials:

Units201920162015
Revenue M AUD  ......  Subscription required  ......  Subscription required 111.34  
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jun 26, 2020
....................... Subscription required ....................... Subscription required Subscription required Jun 26, 2020
....................... Subscription required ....................... Subscription required Subscription required Jun 26, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2018
Annual Report 2017
Press Release 2017
Annual Report 2016
Subscription required - Subscription is required.

News:

NewsDate
Mount Gibson restart at Koolan Island makes the grade July 15, 2019
Mount Gibson restarts Koolan Island shipments to China April 24, 2019
Koolan Island restart on track for Mount Gibson December 13, 2018
Mount Gibson positive ahead of Koolan Island restart August 15, 2018

Aerial view:

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