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Australia
Gregory Crinum Mine

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 Location:
40 km NE from Emerald, Queensland, Australia

  Address:
Gregory mine, Lilyvale rd.
Emerald
Queensland, Australia
4720
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit & Underground
Commodities
  • Coal (metallurgical)
  • Coal (thermal)
Mining Method
  • Truck & Shovel / Loader
  • Dragline
  • Continuous
  • Bord-and-pillar
Production Start...
Mine Life20 years (as of Jan 1, 2019)
The Gregory Crinum mine, comprises the Crinum underground mine and Gregory open cut mine. Production commenced at Gregory in 1979, Crinum mine (longwall) commenced in 1997. Production at Gregory open-cut mine ceased in October 2012. Production at Crinum underground mine ceased in November 2015. On 27 March 2019, BMA completed the sale of Gregory Crinum Mine to Sojitz Corporation.
The underground mining area was successfully re-entered in late October 2020. On Nov. 4, 2021, Mastermyne has restarted surface works at the Crinum coal mine in Queensland following an incident involving a fall of ground in September 2021.


Owners

Source:
CompanyInterestOwnership
Sojitz Corp. 100 % Indirect
On 27 March 2019, BHP Mitsubishi Alliance (BMA) joint venture partners BHP and Mitsubishi Development Pty Ltd (Mitsubishi) confirmed completion of the sale of the Gregory Crinum Mine in central Queensland, to Sojitz Corporation.

Contractors

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Deposit Type

  • Sedimentary


Summary:

The Bowen Basin in Central Queensland contains most of Australia’s high quality metallurgical (coking and pulverised coal injection (PCI)) coal reserves, as well as significant deposits of thermal coal.

Bituminous coal is mined from the Permian German Creek Coal measures.


Mining Methods

  • Truck & Shovel / Loader
  • Dragline
  • Continuous
  • Bord-and-pillar


Summary:

Gregory–Crinum, a hard-coking coal mine 60 km north east of Emerald, reopened after being placed in care and maintenance by previous owners.

Sojitz acquired the Gregory Crinum metallurgical coal mine from BMA in 2019 and is currently mining from the open cut area, with a further strategy to investigate the viability of re-opening the previously sealed Crinum underground mining area.

Crinum mine
During 2020, Sojitz appointed Mastermyne to undertake a feasibility study focusing on the development of a high productivity bord and pillar mining operation. In parallel, Mastermyne were also engaged as the Mine Operator to undertake the re-entry process. The underground mining area was successfully re-entered in late October 2020, with no issues encountered. Mastermyne has continued as the Mine Operator whilst Sojitz finalised internal approvals.

The project scope includes the re-establishment of the underground infrastructure including conveyor systems, ventilation, associated mine services, remediation works and surface infrastructure all of which is expected to take approximately 6 months. Following the re-establishment works the mine will immediately transition into production with a staged ramp up to 3 bord and pillar mining units. The underground mine will produce approximately 11 million tonnes ROM (run of mine) over the life of the project. Mining production is planned to commence late this calendar year.

At full production, ........


Crushing and Grinding


Processing

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Summary:

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Production:

CommodityUnits202220212020
Coal (metallurgical) t  ......  Subscription required  ......  Subscription required  ......  Subscription required
Coal (thermal) t  ......  Subscription required
All production numbers are expressed as clean coal.
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Operational Metrics:

Metrics202220212020
Coal tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required
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Reserves at June 30, 2018:
Cut-off criteria:
Coal Resources UG: 2.0m seam thickness

CategoryOreTypeTonnage CommodityMarketable Coal
Proven In-Situ (OP) 6.6 Mt Coal (metallurgical) 5.4 Mt
Probable In-Situ (OP) 0.3 Mt Coal (metallurgical) 0.2 Mt
Proven & Probable In-Situ (OP) 6.9 Mt Coal (metallurgical) 5.6 Mt
Measured In-Situ (OP) 7.9 Mt Coal (metallurgical)
Indicated In-Situ (OP) 0.7 Mt Coal (metallurgical)
Indicated In-Situ (UG) 112 Mt Coal (metallurgical)
Inferred In-Situ (UG) 0.3 Mt Coal (metallurgical)
Total Resource In-Situ (OP) 8.6 Mt Coal (metallurgical)
Total Resource In-Situ (UG) 113 Mt Coal (metallurgical)


Pipelines
TypeMaterialDiameterLengthDescription


Heavy Mobile Equipment:
HME TypeModelQuantityLeased or
Contractor
Ref. Date
Continuous Miner ....................... Subscription required Leased May 31, 2021
Dragline ....................... Subscription required ....................... Subscription required Jul 31, 2019
Excavator ....................... Subscription required ....................... Subscription required Jul 31, 2019
Excavator ....................... Subscription required ....................... Subscription required Jul 31, 2019
Excavator ....................... Subscription required Jul 31, 2019
Truck (haul) ....................... Subscription required Jul 31, 2019
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Dec 26, 2022
....................... Subscription required ....................... Subscription required Subscription required Dec 26, 2022
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Corporate Filings & Presentations:

DocumentYear
Other 2022
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2017
Annual Report 2015
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