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Australia
Mt Lyell Mine

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 Location:
1.5 km N from Queenstown, Tasmania, Australia

  Regional Office:
Penghana Road
Queenstown
Tasmania, Australia
7467
Phone  ...  Subscription required
Fax61-3-6471-1916
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Overview

StatusCare and Maintenance
Mine TypeUnderground
Commodities
  • Copper
  • Gold
Mining Method
  • Sub-level caving
Production Start...
Mine Life10 years (as of Jan 1, 2022)
The operations of Mt Lyell copper mine were suspended in January 2014 following a mud slide incident and were put into care and maintenance since 09 July 2014 following a rockfall incident in June 2014.

On 27 October 2021 New Century entered into an option agreement with Vedanta Ltd for the acquisition of Copper Mines of Tasmania Pty Ltd, owner of the Mt Lyell Copper Mine.

During the option period, the Group will investigate the refurbishment or replacement of the existing infrastructure for tailings reprocessing, with subsequent integration of in-situ ore processing to follow. The Option Agreement includes a minimum expenditure commitment by the Company of US$10 million over the option period towards development and exploration, in addition to the capped reimbursement of care and maintenance costs of US$13 million.


Owners

Source: p. 116
CompanyInterestOwnership
Vedanta Resources plc. 65.2 % Indirect
Copper Mines of Tasmania Pty Ltd. (operator) 100 % Direct
New Century executed an Option Agreement with Monte Cello B.V. (MCBV), a subsidiary of Vedanta Limited (Vedanta) for the acquisition of Copper Mines of Tasmania Pty Ltd (CMT), owner of the Mt Lyell Copper Mine (Mt Lyell) in Tasmania.

The Option Agreement followed the Group’s announcement on 27 October 2021 that it had entered into a binding term sheet to acquire CMT from MCBV following a two-year period to evaluate the potential for restart of operations at Mt Lyell. The option period commenced on 5 November 2021. Should the option to acquire be exercised, the acquisition consideration will be by way of a capped royalty paid over time from the operations.

Contractors

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Deposit Type

  • Volcanic hosted


Summary:

The regional and local geology of the Project area is well understood having a long exploration and development history. Stratigraphically the oldest rocks are the Cambrian aged sequence containing locally the Tyndall Group, Central Volcanic Complex, Yolande River Sequence and andesitic volcanics and intrusives. These are overlain by the late Cambrian-Ordovician aged Owen group and Silurian aged Eldon Group. Quaternary/Tertiary deposits, including glacials, complete the regional geological sequence.

Prince Lyell -Deeps/North Flank/D Panel/Royal Tharsis
The footwall of the mineralisation at the Prince Lyell Deeps is defined by the Great Lyell Fault, which juxtaposes the Cambrian volcanic host rocks against a later Cambro-Ordivician sedimentary sequence. The Great Lyell Fault truncates the mineralisation at depth.

The mineralisation consists of disseminated to veinlet pyrite-chalcopyrite hosted within strongly altered and schistose volcanic rocks. Alteration consists of a chlorite-pyrite+/-magnetite core surrounded by a muscovite pyrite envelope. The North Flank/D Panel and Royal Tharsis mineralisation and alteration is similar to the Prince Lyell, however the former has a stronger stratigraphic control.

Dimensions:
Prince Lyell North Flank: the resource has dimensions of 490 m in height, 1,500 to 2,090 mRL (2,000 mRL represents sea level and the surface is approximately 420 m above sea level). The strike length of the resource is up ........


Mining Methods

  • Sub-level caving


Summary:

Confirmed suitability of sublevel caving (SLC) mining method for future underground operations – successfully utilised at Mt Lyell since 1995.


Crushing and Grinding


Processing

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Summary:

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Production:
In fiscal 2013, Cooper concentrate also contained 14,197 ounces of gold and 131,376 ounces of silver.

CommodityProductUnits20142013
Copper Metal in concentrate t 17,83926,047
Copper Concentrate kt 73107

Operational Metrics:

Metrics20142013
Ore tonnes mined 1,739,223 t2,519,464 t
Tonnes processed 2.4 Mt

Reserves at June 30, 2022:
The Ore Reserve estimate is based on a cut-off grade of 0.75% Cu.

The Mineral Resources estimate is based on a cut-off grade of 0.2% - 0.8% Cu.

CategoryTonnage CommodityGradeContained Metal
Probable 23.9 Mt Copper 1.03 % 246 kt
Probable 23.9 Mt Gold 0.26 g/t 198 koz
Probable 23.9 Mt Copper Equivalent 1.14 %
Total Resource 140.3 Mt Copper 0.84 % 1,176 kt
Total Resource 140.3 Mt Gold 0.22 g/t 955 koz
Total Resource 140.3 Mt Copper Equivalent 0.93 %



Heavy Mobile Equipment as of December 31, 2017:
HME TypeModelQuantityLeased or
Contractor
Jumbo ....................... Subscription required ....................... Subscription required Leased
Loader ....................... Subscription required ....................... Subscription required Leased
Shotcreter ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 21, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 21, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Corporate Presentation 2022
Integrated Report 2022
Press Release 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2019
Annual Report 2018
Other 2017
Annual Report 2015
Annual Report 2014
Annual Report 2013
Annual Report 2013
Annual Review 2013
Annual Report 2012
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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