Overview

Mine Type	Open Pit
Status	Active
Commodities	Coal (metallurgical)
Mining Method	Truck & Shovel / Loader Dragline
Production Start	...
Mine Life	...
Snapshot	South Walker Creek PCI is one of the highest performing PCI products in a steel blast furnace given its low volatility matter. Expansion to 9.4Mtpa of ROM Coal and 7.0 Mtpa saleable production is expected between mid-2024 and early 2025. All approvals are in place and the commencing of work is on track with encouraging tender outcomes for the mining services contract, CHPP upgrade and MIA infrastructure works. MRA2C Project is Fully permitted project provides access ROM with lower strip ratios, higher yields and shorter hauls. MRA2C has commenced with scheduled for first coal in early 2025.

Deposit type

• Sedimentary

Summary:

The South Walker Creek (SWC) deposit is situated within the Nebo Synclinorium on the eastern flank of the Carborough Syncline. Permian coal measures dip westerly at five to ten degrees, with dips steepening in the north in the Kemmis deposit. Locally the principal economic seam is the Main Seam, which splits to the north and south into Main Tops and Main Bottoms. The Main Seam is believed to be equivalent with the Elphinstone Seam (Leichardt) and upper part of the Hynds Seam, and extends over two kilometres in strike length in the south, comprising 10.5 to 14m of mainly dull to dull banded coal with minor mudstone partings. The Hynds Seam in South Walker has deteriorated to a sub-economic banded seam and displays seam splitting relationships present at South Walker Creek.

The Hynds Seam consists of three components: two coal seams (Upper & Lower); and the Yarrabee Tuff, and is equivalent to the Vermont seam, mined at the Poitrel Deposit. The Hynds Seam lies between 15 and 60 metres below the main seams, at an average of 32 metres, and varies in thickness across the deposit and tends to be heavily stone banded.

The Hynds Upper (HT) split is generally thin (one to two metres) and contains few stone bands. Underlying Yarrabee Tuff is commonly altered to clay and tends to be soft and puggy in nature with an average thickness of 0.5 metres and is problematic for coal washing if mined. Hynds Lower Seam (HB) tends to be substantially thicker (two to nine metres) than the upper seam, but contains multiple stone bands. The Hynds seam is only occasionally intersected, not because it is not present, but due to a lack of drill holes of sufficient depth.

Dimensions
Resources in the Main Seam occur from the southern boundary to the northern boundary of ML4750. The subcrop length in ML4750 of the Main Seam is 42 km length. At the widest point of the leasehold, the Main Seam extends for 5.2 km from subcrop to the edge of the lease boundary. In the narrow very northern part of the lease, the subcrop to lease boundary distance is ~580 m.

Resources contained in the Hynds seam are confined to the northern part of the deposit, where it extends over two distinct areas, 3.2 and 2.4 km length.

Mining Methods

- subscription is required.

Comminution

Crushers and Mills

Processing

- subscription is required.

Production

Commodity	Units	2023	2022	2021	2020	2019	2018	2017	2016	2015
Coal (metallurgical)	Mt	....	....	....	....	6.2	6	5.1	5.4	5.3

Operational metrics

Metrics	2022	2021	2020	2019	2018	2017	2016
Coal tonnes mined	....
Hourly processing capacity	....
Annual production capacity	....
Coal tonnes mined	....	....	....	7,729,459 t of ROM coal	8,108,267 t of ROM coal	7,375,485 t of ROM coal	7,174,153 t of ROM coal
Plant annual capacity	....	....	....
Tonnes processed	....	....	....	8,053,609 t	8,377,813 t	7,013,840 t	7,109,632 t

Personnel

Job Title	Name	Profile	Ref. Date
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