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Australia
Savannah Mine (Savannah Operation)

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 Location:
103 km NE from Halls Creek, Western Australia, Australia

  Regional Office:
PMB 19
Kununurra
Western Australia, Australia
6743
Phone  ...  Subscription required
Fax+61-8-9167-8113
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Fleet
  • Personnel
  • Filings & News

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Overview

StatusTemporary Suspension
Mine TypeUnderground
Commodities
  • Nickel
  • Copper
  • Cobalt
Mining Method
  • Longhole open stoping
  • Cemented backfill
  • Paste backfill
Processing
  • Flotation
Mine Life8.3 years (as of Jan 1, 2019)
A restart to mining operations at the Savannah underground site could restart in the first half of the 2021 calendar year, subject to the completion of back-reaming FAR #3.
Latest NewsWestern Areas takes Panoramic stake as Savannah re-start looms     May 25, 2020


Owners & OPERATOR

Source:
CompanyInterestOwnership
Barminco Holdings Pty Ltd. (operator)
Panoramic Resources Ltd. 100 % Indirect
Savannah Nickel Mines Pty Ltd. 100 % Direct
Panoramic recently handed underground operational management of the Savannah nickel mine to Perenti subsidiary, Barminco.
Under the agreement, Barminco undertakes mine development, production and haulage with approximately 120 employees working at Savannah.

Deposit Type

  • Magmatic
  • MMS


Summary:

The original Savannah sulphide rich nickel, copper and cobalt orebody is hosted by the layered mafic-ultramafic Savannah Intrusion which is enveloped by aluminous metasediments and para-gneisses of the Tickalara Metamorphics. The Savannah Orebody is mostly confined to a marginal norite unit up to 40 metres thick developed above the base of the intrusion. Areas of massive, matrix and disseminated sulphide mineralisation, dominated by pyrrhotite, chalcopyrite, pentlandite and minor pyrite occur throughout the marginal norite unit.

Prior to the development of the Savannah Open Pit, the marginal norite unit outcropped as a prominent 250 metre long limonite-goethite gossan with fresh sulphide mineralisation developing approximately 20 metres below surface. At approximately 500 metres below the surface, a significant sub-horizontal fault, the 500 Fault, cuts the orebody and offsets it 200 metres to the northwest. A similar fault at approximately 900 metres below surface, the 900 Fault, offsets the orebody a further 250 metres to the northwest. Mineralisation above the 500 Fault is referred to as the “Upper Zone”, between the 500 and 900 faults as the “Lower Zone” and below the 900 Fault as the “sub 900 Fault Zone”.


Mining Methods

  • Longhole open stoping
  • Cemented backfill
  • Paste backfill


Summary:

Ore production is undertaken via conventional long hole open stoping with remote bogging on retreat. Currently, the long hole drilling is undertaken by a contractor. Savannah purchased a used Cabletec drilling rig for ground support and as a backup production drill, as required. The mine plan requires open stopes to be backfilled with cemented paste fill to maximise recovery of the orebody and to assist geotechnical stability of the mine.


Crushing and Grinding


Processing

  • Flotation

Source: Subscription required

Summary:

The process plant at Savannah was commissioned in August 2004 and comprises a single stage crusher, SAG mill, flotation, thickening and filtering stages to produce a bulk nickel, copper, cobalt concentrate. Over the 2004 to 2016 initial operating period, metallurgical recoveries averaged 86-89% for nickel, 94-97% for copper and 89-92% for cobalt. The plant was originally designed for a throughput of 750,000 tonnes per annum, but consistently outperformed the design specifications with rates exceeding 1 million tonnes on an annualised basis.

The Processing and Paste Plants were refurbished by MACA Interquip between June 2018 and February 2019 and the Processing Plant was recommissioned in December 2018. The major refurbishment works undertaken included:
- Repair and/or replacement of corroded structural steel and painting throughout;
- ROM orebin refurbishment and replacement of the grizzly;
- Refurbishment of the crusher:
- Refurbishment of the emergenc ........

Recoveries & Grades:

CommodityParameter2019
Nickel Recovery Rate, %  ......  Subscription required
Nickel Head Grade, % 1.16
Nickel Concentrate Grade, %  ......  Subscription required
Copper Recovery Rate, %  ......  Subscription required
Copper Head Grade, % 0.6
Copper Concentrate Grade, %  ......  Subscription required
Cobalt Recovery Rate, %  ......  Subscription required
Cobalt Head Grade, % 0.06
Cobalt Concentrate Grade, %  ......  Subscription required
Subscription required - Subscription is required.

Production:

CommodityUnits2019
Nickel t  ......  Subscription required
Copper t  ......  Subscription required
Cobalt t  ......  Subscription required
All production numbers are expressed as metal in concentrate.
Subscription required - Subscription is required.

Operational Metrics:

Metrics2019
Ore tonnes mined  ......  Subscription required
Tonnes processed  ......  Subscription required
Subscription required - Subscription is required.

Reserves at October 19, 2019:

CategoryTonnage CommodityGradeContained Metal
Proven 1,371,000 t Nickel 1.16 % 15,900 t
Proven 1,371,000 t Copper 0.75 % 10,300 t
Proven 1,371,000 t Cobalt 0.06 % 800 t
Measured 1,178,000 t Nickel 1.4 %
Measured 1,178,000 t Copper 0.86 %
Measured 1,178,000 t Cobalt 0.07 %
Indicated 1,402,000 t Nickel 1.67 %
Indicated 1,402,000 t Copper 0.98 %
Indicated 1,402,000 t Cobalt 0.09 %
Inferred 125,000 t Nickel 1.72 %
Inferred 125,000 t Copper 0.75 %
Inferred 125,000 t Cobalt 0.09 %
Total Resource 2,705,000 t Nickel 1.55 % 42,000 t
Total Resource 2,705,000 t Copper 0.95 % 25,800 t
Total Resource 2,705,000 t Cobalt 0.08 % 2,200 t


Heavy Mobile Equipment as of October 19, 2019:
HME TypeModelSizeQuantity
Loader ....................... Subscription required 2
Underground truck 60 t 6
Underground truck ....................... Subscription required 65 t 2
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Dec 28, 2020
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
Press Release 2017
Press Release 2017
Subscription required - Subscription is required.

News:

NewsDate
Western Areas takes Panoramic stake as Savannah re-start looms May 25, 2020
Panoramic suspends Savannah nickel operations April 15, 2020
Independence Group launches takeover offer for Panoramic November 4, 2019
Panoramic first shipment from Savannah restart sets sail February 15, 2019

Aerial view:

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