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Australia
Grosvenor Mine

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 Location:
4.61 km NW from Moranbah, Queensland, Australia

  Address:
Shop 16, Moranbah Shopping Fair - Saint Francis Drive
Moranbah
Queensland, Australia
4744
Phone  ...  Subscription required
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StatusTemporary Suspension
Mine TypeUnderground
Commodities
  • Coal (metallurgical)
Mining Method
  • Longwall
Processing
  • Wash plant
  • CHPP
  • Dense media separation
Mine Life18 years (as of Jan 1, 2019)
Metallurgical coal operations were affected by an underground incident at Moranbah North, as well as at Grosvenor, where operations have been suspended since the beginning of May, with the mine currently expected to return to operation in the second half of 2021.
Latest NewsAnglo American plc.: Grosvenor mine operations to resume next year     July 31, 2020


Owners

Source: p. 36
CompanyInterestOwnership
Ns Resources Australia Pty Ltd 1.25 % Indirect
Mitsui & Co., Ltd. 4.75 % Indirect
Nippon Steel Australia Pty Ltd. 5 % Indirect
Anglo American plc. 88 % Indirect
On 18 December, 2020, Anglo American completed the equalisation of ownership across its integrated metallurgical coal operations at Moranbah North and Grosvenor in Queensland, Australia.

The ownership structure of Moranbah North has been replicated at Grosvenor, through the sale of a 12% interest in the Grosvenor mine to the same consortium of Japanese companies which hold an equivalent interest at Moranbah North (being Nippon Steel Corporation, Mitsui & Co., Ltd, Nippon Steel Trading Corporation, Shinsho Corporation and JFE Mineral Co., Ltd).

Deposit Type

  • Sedimentary


Summary:

Grosvenor is a greenfield metallurgical coal project in Queensland’s Bowen Basin.

The Bowen Basin of eastern Australia contains up to 10 km of largely clastic sediment from terrestrial and shallow marine origin along with substantial volumes of economic coals. The German Creek Formation (GCM), the Moranbah coal measures (MCM) and the Rangal Group Measures (RCM) host most of the open pit and underground mining operations. Basin sediments were sourced from emergent volcanic uplands, so clasts are generally lithic and form clay-rich weathering products. The basal unit of the GCM is marine and devoid of coal, and overlain by a delta plain coal bearing sequence of siltstones, some sandstones, and interbedded, often carbonaceous, siltstone and sandstone with coals. The MCM comprises alluvial plain sediments overlying a shallow marine shelf, with sequences of thick sheets of lithic sandstone and interbedded siltstone-sandstone generally overlying carbonaceous siltstone and coal. The basin-wide RCM sequence comprises sandstones, siltstones, interbedded sandstone-siltstone, carbonaceous siltstones, and coals, and is overlain by a noncoal bearing alluvial sequence of massive sandstone and siltstone. Several tuffaceous marker beds occur, some of which are lithified while others form thin bands of high plasticity clay. In most areas there is a Tertiary unconformity overlain by sheets of clay-bound alluvial or lacustrine sediments, and in some areas there are basalt flows.

Deep weathering cycles occurred during Tertiary time, and modern drainage courses include alluvial sequences to depths of 20m or more. Weathering alteration includes leaching, laterisation, and transformation to clay. Depths of distinct weathering to complete transformation range from 15m to 45m. Bowen Basin coal measures rock material strengths range from extremely low (UCS <2MPa) to high (20 to 60MPa) and generally average 10 to 25MPa. Typically material stiffnesses fall into the low to moderate modulus ratio range.


Mining Methods

  • Longwall


Summary:

Grosvenor Mine is an underground longwall mine operation.

Development roadways are mined 3.7m high by 5.4m wide.

Two roadways are mined with cross access roads every 125m so the longwall can be adequately operated and maintained.

8 x 2.1m roof bolts and 6 x 1.8m rib bolts each metre installed when in optimum mining conditions (with 2 x 8m roof cable bolts every four metres).

Longwall panels average ~4km long and are 300m wide.

Coal is cut by the shearer using primarily bi- directional method with 1m advance per shear.

Extraction height ranges from 4.7m to 3.8m.


Crushing and Grinding


Processing

  • Wash plant
  • CHPP
  • Dense media separation

Source: Subscription required

Summary:

The Grosvenor mine uses Moranbah North’s coal processing infrastructure.

The mine adjoins Moranbah North, where Grosvenor Mine’s hard coking coal is transported via conveyor to shared coal handling and processing facilities. The coal is transported from Moranbah North via rail to port.

Coal processing through the Moranbah North Coal Handling and Preparation Plant, where it is crushed, sized and washed. Product coal is delivered by rail from the existing Moranbah North Mine rail load-out facilities to the Dalrymple Bay Coal Terminal for export.

Pre-feasibility study is underway for a debottlenecking and expansion of the Moranbah- Grosvenor coal handling and preparation plant to increase capacity by 4-6 Mtpa.


Production:

CommodityUnits20192018201720162015
Coal (metallurgical) t  ......  Subscription required3,763,5002,067,2001,759,000499,800
All production numbers are expressed as clean coal.
Subscription required - Subscription is required.

Operational Metrics:

Metrics2019
Raw coal annual capacity  ......  Subscription required
Subscription required - Subscription is required.

Reserves at December 31, 2018:

CategoryTonnage Commodity
Proven 36.4 Mt Coal (metallurgical)
Probable 125.2 Mt Coal (metallurgical)
Proven & Probable 161.6 Mt Coal (metallurgical)
Measured 153.2 Mt Coal (metallurgical)
Indicated 61.2 Mt Coal (metallurgical)
Measured & Indicated 214.5 Mt Coal (metallurgical)
Inferred 44.5 Mt Coal (metallurgical)

Commodity Production Costs:

CommodityUnits2019
Total cash costs Coal (metallurgical) USD  ......  Subscription required
Subscription required - Subscription is required.


Heavy Mobile Equipment:
HME TypeModelQuantityRef. Date
Continuous miner 4 Nov 12, 2019
Drill ....................... Subscription required 2 Nov 30, 2018
Longwall miner 1 Nov 12, 2019
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 2, 2021
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Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required 2020
Subscription required Subscription required Subscription required 2019
Subscription required Subscription required Subscription required 2018

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Other 2018
Other 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Year-end Mineral Reserves 2017
Annual Report 2016
Year-end Mineral Reserves 2016
Annual Report 2015
Fact Sheet 2015
Year-end Mineral Reserves 2015
Other 2014
Other 2000
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News:

NewsDate
Anglo American plc.: Grosvenor mine operations to resume next year July 31, 2020
Anglo American suspends Grosvenor mine May 7, 2020
Anglo American offloads Grosvenor stake to Japanese November 29, 2019
Anglo American extends drilling contract with Mitchell Services May 1, 2019

Aerial view:

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