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Australia
Dartbrook OP Project (Dartbrook UG)

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 Location:
122 km NW from Newcastle, New South Wales, Australia

  Project Contacts:
Level 1 371 Queen Street
Brisbane
New South Wales, Australia
4000
Phone  ...  Subscription required
Fax+61-7-3229-9323
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StatusInactive / Suspended
Mine TypeOpen Pit
Commodities
  • Coal (thermal)
Mining Method
  • Truck & Shovel / Loader
Mine Life25 years (as of Jan 1, 2018)
The introduction of the State Environmental Planning Policy (Resources and Energy) 2021 prohibits any open cut mining at the Dartbrook Coal Project. The Dartbrook Coal Project has faced strong stakeholder opposition and lengthy legal challenges about this issue in the past and any future open cut mining proposals are expected to attract similar scrutiny.


Owners

Source: p. 9
CompanyInterestOwnership
Australian Pacific Coal Ltd. 100 % Indirect
Australian Pacific Coal completed the 100% acquisition of the Dartbrook mine in May 2017. Australian Pacific Coal owns the Dartbrook Coal Project through its wholly owned subsidiaries, ACQ Investments 2 Pty Limited (ACQ Investments), AQC Dartbrook Pty Ltd (AQC Dartbrook), AQC Management Pty Ltd (AQC Management) and Dartbrook Coal (Sales) Pty Ltd (AQC Sales).

27 September 2022 - The Board were pleased to advise that a binding agreement had been entered into with Trepang, Tetra and M Resources in relation to a joint venture to see Dartbrook re-commissioned as a coal producing mine (Strategic Partnership). Assuming binding agreements are entered into with Trepang, the joint venture raises the funds required to re-start production, all necessary approvals are obtained and production re-starts within the agreed timeframe, the overall joint venture equity ownership interest will be: AQC-50%; M Resources-20%; Tetra Resources-20%; and Trepang-10% (free-carried).

Contractors

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Deposit Type

  • Sedimentary


Summary:

Coal within Dartbrook is located on the western side of the Muswellbrook Anticline. Strata of the Permian Wittingham Coal Measures outcrop in the area and dip gently generally to the west. The location of the igneous intrusions and faults in the Dartbrook deposit is well-known. They have been considered for both resource estimation and mining operations. Based on observations from previous underground operations, the igneous intrusions and faults will have no material impact on the Dartbrook coal product qualities.

Within the Dartbrook Open Cut Pre-Feasibility Study mine schedule there are 13 coal seams amenable to open cut mining.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Australian Pacific Coal’s vision is to develop Dartbrook as a low impact, open cut, mining operation.

The Dartbrook tenements contain a total Coal Resource of approximately 2,534 Million tonnes (588 Mt Measured, 850 Mt Indicated, 1,097 Mt Inferred). Within this Coal Resource, open cut mining is amenable in areas for a total of 1,803 Mt at a depth shallower than 450m.

The OC PFS mine plan mines 226 Mt ROM coal with 190 Mt, or 84%, classified as a ROM Coal Reserve. Based on the modelled processing yield applied by the Competent Person and rounding, this equates to a Marketable Reserve of 140 Mt. This reflects the capacity of the proposed 10 Mtpa pit operating for 25 years, at a strip ratio of 4.0 to 1. Beyond the OC PFS mining pit, the Coal Reserve extends to the south, west and north of the OC PFS mining pit.


Crushing and Grinding


Processing

Source: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityUnitsLOM
Coal (thermal) Mt 172
All production numbers are expressed as clean coal.

Operational Metrics:

Metrics
Stripping / waste ratio 4 bcm/t *
Raw coal annual capacity 10 Mt *
ROM coal, LOM 226 Mt *
* According to 2018 study.

Reserves at March 28, 2018:
The Coal Resource have been estimated in accordance with the JORC Code, 2012 Edition. The Dartbrook tenements contain a total Coal Resource of approximately 2,534 Million tonnes (588 Mt Measured, 850 Mt Indicated, 1,097 Mt Inferred). Within this Coal Resource, open cut mining is amenable in areas for a total of 1,803 Mt at a depth shallower than 450m.

The Dartbrook Marketable Coal Reserve of 370Mt is derived from a run of mine Coal Reserve of 470 Mt estimated in accordance with JORC 2012 with a predicted overall yield of 78%. The 370Mt Marketable Coal Reserve is included in the 2.5 Bt Coal Resource (588Mt Measured, 850 Mt Indicated, 1,097Mt Inferred).

CategoryTonnage CommodityMarketable Coal
Probable 470 Mt Coal (thermal) 370 Mt
Measured 507 Mt Coal (thermal)
Indicated 638 Mt Coal (thermal)
Inferred 658 Mt Coal (thermal)
Total Resource 1,803 Mt Coal (thermal)

Commodity Production Costs:

CommodityUnitsAverage
Assumed price Coal (thermal) USD 83 / t *  
* According to 2018 study / presentation.

Operating Costs:

Units2018
OP mining costs ($/t mined) AUD 30.8 *
Total operating costs ($/t processed) AUD  ......  Subscription required
* According to 2018 study.
Subscription required - Subscription is required.

2018 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Pre-Production capital costs $M AUD  ......  Subscription required
Total CapEx $M AUD  ......  Subscription required
Operating margin, %  ......  Subscription required
After-tax NPV @ 10% $M AUD  ......  Subscription required
After-tax IRR, %  ......  Subscription required
After-tax payback period, years  ......  Subscription required
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 27, 2022
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2018

Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
................................... Subscription required 2021
................................... Subscription required 2019
Environmental Assessment 2018
Pre-Feasibility Study Report 2018
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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