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Australia
Tomingley Gold Extension Project (Tomingley Gold Operations)

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 Location:
53 km SW from Dubbo, New South Wales, Australia

  Project Contacts:
Tomingley West Road
PO Box 59 PEAK HILL NSW
Tomingley
New South Wales, Australia
2869
Phone  ...  Subscription required
Fax+61-2-6882-9282
EmailEmail
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  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StagePermitting
Mine TypeOpen Pit & Underground
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
  • Longhole open stoping
  • Paste backfill
Production Start...
Mine Life10 years (as of Jan 1, 2021)
Alkane intends to extend gold mining operations at Tomingley to include the San Antonio and Roswell (SAR) resources immediately south of the existing mine.
Latest NewsAlkane Receives Government Approval for Tomingley Gold Extension Project     February 22, 2023


Owners

Source: p. 61,109
CompanyInterestOwnership
Alkane Resources Ltd. 100 % Indirect
Tomingley Gold Operations Pty Ltd is wholly-owned subsidiary of Alkane Resources Ltd.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Orogenic
  • Volcanic hosted


Summary:

The Tomingley gold deposits are interpreted as orogenic gold systems positioned within a major structural zone. This style of deposit is well documented globally with the more significant example in Australia being the Archean greenstone belts of the Yilgarn Craton in WA.

Roswell
The Roswell deposit is hosted in the Mingelo Volcanic Formation, a strongly deformed and hydrothermally altered Ordovician aged belt of volcanics that are predominantly andesitic volcaniclastic breccias, lesser sandstone/siltstone units, lavas and black mudstones. The volcanics are overlain by the younger Cotton Formation siltstones.

The mineralisation at Roswell is primarily hosted by two ‘brittle’ volcanic units (monzodiorite and andesite) as per the structural setting observed at the Tomingley gold deposits. These volcanics host structural zones generated by a competency contrast between the ‘brittle’ volcanics and ‘ductile’ volcaniclastic sediments.

Mineralisation is characterised as similar to the Tomingley gold mineralisation, with quartz carbonatepyrite-arsenopyrite veins hosted in phyllic altered volcanics. These sheeted quartz veins are orientated as steep east dipping, striking approximately 10o east of north, and are typically constrained within the volcanic units. The mineralisation has been defined by drilling over a strike length of approximately 600 metres and remains open to the north and at depth. The higher grade mineralisation occurs in the s ........


Mining Methods

  • Truck & Shovel / Loader
  • Longhole open stoping
  • Paste backfill


Summary:

Underground Mining
In May 2020 the NSW Government Resources Regulator granted approval for the development of an exploration drive from the existing underground Wyoming One operation to the Roswell deposit.

The underground mine plan prepared for the Roswell deposit utilises this drive to enable the extraction of ore prior to the completion of the Roswell Open Cut. The exploration drive extends into the upper half of the currently planned stoping area, and will enable both upwards and downwards development. There is the possibility that in time the Roswell decline may daylight into the Roswell open cut pit ramp, although this is currently not scheduled until 2027 – 2029, assuming the Roswell underground extends at depth.

Stoping configurations are predominantly single-lift stoping (25m vertical interval) with strike length of 20-25m. The stoping method involves establishing a slot using conventional long-hole drill and blast techniques and then the primary stopes mined in a checker board pattern retreated along strike to the central access. The primary stopes are paste-filled and then the secondary stopes are accessed by mining through the paste-filled primary stopes. The secondary stopes are then mined, being left unfilled. The installation of brow cables and the use of a concurrent strike-retreat blasting sequence, and use of paste fill, will assist in controlling ground stability.

Ore production is scheduled to be 840 ktpa which would ........


Crushing and Grinding
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Processing

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Summary:

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Projected Production:

CommodityUnitsAvg. AnnualLOM
Gold oz 60,000745,000

Operational Metrics:

Metrics
Stripping / waste ratio  ......  Subscription required
Waste tonnes, LOM  ......  Subscription required
Ore tonnes mined, LOM  ......  Subscription required
Annual processing rate  ......  Subscription required
Annual processing capacity  ......  Subscription required
* According to 2021 study.
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Reserves at June 30, 2022:
Open Pittable Reserves cut off 0.40g/t Au.
Underground Reserves cut off 1.6g/t Au.

CategoryTonnage CommodityGradeContained Metal
Probable 9,456 kt Gold 1.8 g/t 547 koz
Indicated 13,443 kt Gold 1.92 g/t
Inferred 6,424 kt Gold 2.09 g/t
Total Resource 19,867 kt Gold 1.98 g/t 1,264 koz

Commodity Production Costs:

CommodityUnitsAverage
All-in sustaining costs (AISC) Gold AUD  ......  Subscription required&nbs
* According to 2021 study / presentation.
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2021 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Expansion CapEx $M AUD  ......  Subscription required
Subscription required - Subscription is required.


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 21, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 21, 2022
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Staff:

Total WorkforceYear
Subscription required 2021

Corporate Filings & Presentations:

DocumentYear
Press Release 2023
Annual Report 2022
Corporate Presentation 2022
Corporate Presentation 2022
Corporate Presentation 2022
Quarterly Report 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
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News:

NewsDate
Alkane Receives Government Approval for Tomingley Gold Extension Project February 22, 2023

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