Overview
| Stage | Production |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
- Truck & Shovel / Loader
- Auger
- Backfill
|
| Processing |
|
| Production Start | 2021 |
Peabody Energy Corp. Millennium and Mavis Downs Mine ceased production in March 2020.
On April 15, 2021, MetRes Pty Ltd, a 50/50 joint venture (JV) between Stanmore Coal and M Resources, acquired the Millennium and Mavis Downs coal mine in Queensland from Peabody Energy.
On October 7, 2021 - Millennium and Mavis Downs Mine has officially reopened.
On August 30, 2021, PIMS Group was recently awarded a five-year contract to convert the idled open-pit Millennium and Mavis Downs coal mines, west of Mackay, Queensland, to underground operations, which could ultimately result in an estimated 1.2 Mt/y of incremental coal extraction. |
| Latest News | Komatsu, PIMS Group giving life to coal December 3, 2021 |
Source:
p. 1,3
April 15, 2021 - MetRes Pty Ltd, a 50/50 joint venture (JV) between Stanmore Coal and M Resources, has acquired the Millennium and Mavis Downs coal mine in Queensland from Peabody Energy. M Resources to appoint a wholly owned subsidiary, M Mining Pty Ltd as the Joint Venture Manager and operator of the proposed mining activities.
GEAR’s effective interest in Stanmore is 60% through its approximately 80% shareholding in its subsidiary Golden Investments (Australia) Pte. Ltd. which holds 75.33% in Stanmore.
Contractors
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Summary:
The Millennium project area lies within the Permo-Triassic Bowen Basin. The Bowen Basin consists of 10 kilometre (km) thick sequences of volcanic, shallow marine and terrestrial sediments and is categorised back-arc to foreland basin.
Coal seams occur within the Rangal Coal Measures which are Late Permian in age. These seams dip to the west at approximately 4 - 7 degrees within the Millennium Lease and 4 – 10 degrees to the east at Mavis Downs.
The coal seams of interest found within the Project area are as follows – Leichhardt and Vermont Upper 1. Additional seams were intersected in the historic drilling and in part analysed these were the M seam and plies of the Vermont Lower Seams.
The target seams have a cumulative thickness of approximately 7 m across the deposit.
Mining Methods
- Truck & Shovel / Loader
- Auger
- Backfill
Summary:
• Open cut mining method is planned to be conventional strip mining where the floor dip is suitable, and terrace mining where the floor dip is steeper. Waste will be drilled and blasted before being removed by bench using one large 600 t and one 350 t hydraulic excavators and rear dump trucks. The mined waste will be backfilled in the voids behind the active mining operations. No ex-pit dump needed to be created within the mining schedule.
• Open cut coal is planned to be mined by one 350 t hydraulic excavators and hauled by suitable matched rear dump trucks to a ROM stockpile pad before being processed by a coal handling and processing plant.
• Augers will be deployed for mining Leichhardt seams in Mavis Downs and both Leichhardt and Vermont seams in Millennium in area where it has not been mined by highwall miners previously.
Source:
Summary:
The existing coal handling and preparation plant (RMJV) will be using similar washing technology to produce low ash coking and PCI coal.
The current operation shares a ROM pad with the neighbouring Poitrel Mine at the Red Mountain CHPP.
Product coal will be railed to export coal ship loading facilities at Dalrymple Bay Coal terminal.
Millennium and Mavis Downs is expected to produce 13.9 million tonnes of metallurgical coal across its mine life.
Production:
The Company’s Millennium Mine ceased production in March 2020, with sales continuing throughout May 2020.
| Commodity | Units | 2020 | 2019 | 2018 | 2017 | 2016 |
|
Coal (metallurgical)
|
M tons
| ...... | ...... | 1.9 | 3.3 | 3.5 |
| Heat Content | BTU/lb | | 12,600 | 12,600 | 12,600 | 12,600 |
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Reserves at October 31, 2020:
50% in-situ ash adb basis cut-off was applied to coal seams in the Resource model used for this estimate.
| Category | OreType | Tonnage | Commodity | Marketable Coal |
|
Proven
|
In-Situ (OP)
|
1.47 Mt
|
Coal (metallurgical)
|
|
|
Proven
|
In-Situ (UG)
|
1.29 Mt
|
Coal (metallurgical)
|
|
|
Probable
|
In-Situ (OP)
|
0.72 Mt
|
Coal (metallurgical)
|
|
|
Probable
|
In-Situ (UG)
|
4.13 Mt
|
Coal (metallurgical)
|
|
|
Proven & Probable
|
In-Situ (OP)
|
2.19 Mt
|
Coal (metallurgical)
|
|
|
Proven & Probable
|
In-Situ (UG)
|
5.43 Mt
|
Coal (metallurgical)
|
4.56 Mt
|
|
Measured
|
Total
|
13 Mt
|
Coal (metallurgical)
|
|
|
Indicated
|
Total
|
17 Mt
|
Coal (metallurgical)
|
|
|
Inferred
|
Total
|
7 Mt
|
Coal (metallurgical)
|
|
|
Total Resource
|
Total
|
37 Mt
|
Coal (metallurgical)
|
|
| HME Type | Model | Size | Quantity | Status | Leased or
Contractor | Ref. Date |
|
Continuous Miner
|
.......................
|
|
.......................
|
Proposed
|
|
Dec 3, 2021
|
|
Excavator
|
|
600 t
|
.......................
|
Existing
|
|
Apr 15, 2021
|
|
Excavator
|
|
350 t
|
.......................
|
Existing
|
|
Apr 15, 2021
|
|
.......................
|
.......................
|
|
.......................
|
Proposed
|
|
Dec 3, 2021
|
|
Truck (dump)
|
|
|
|
Existing
|
|
Apr 15, 2021
|
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Aerial view:
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