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Australia
Kambalda Nickel Operation (Cassini Mine, Miitel Mine, Northern Operations (Otter Juan/Durkin North and Long) Mine)

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 Location:
106 S from Kalgoorlie, Western Australia, Australia

  Address:
Level 1 / 8 Richardson Street
PO Box 1810
West Perth
Western Australia, Australia
6005
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Nickel
  • Copper
  • Cobalt
Mining Method
  • Overhand Cut & Fill
  • Longhole stoping
  • Longhole open stoping
  • Avoca
  • Longitudinal stoping
  • Cemented backfill
Production Start...
Mine Life6 years (as of Jan 1, 2022)
Kambalda Nickel Operations (“KNO”) comprise the Cassini and Northern Operations.

During FY2022, Mincor successfully completed construction and commissioning programs at both the Cassini Nickel mine and the Northern Operations.

First development ore was extracted from the Northern Operations in December 2021 and Cassini in March 2022. The first stope was fired in the 495 Level at Durkin North in June 2022. First processing of ore from KNO was achieved in May 2022, sourced from a steady build up of development ore stockpiles delivered to the concentrator between February and early May 2022, resulting in the first revenue in June 2022.

The successful firing and extraction of the first production stope at the Cassini Nickel Mine in 29 November 2022.
Latest NewsMincor holds out for a better offer     March 22, 2023


Owners

Source: p. 9
CompanyInterestOwnership
Mincor Resources NL 100 % Direct
All of Mincor’s mines and tenements in the Kambalda District are 100% owned.

Contractors

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Deposit Type

  • Volcanic hosted
  • Intrusion related


Summary:

The key setting for all the nickel that has been mined historically at Kambalda district is at a contact zone between two rock types, with a younger overlaying volcanic rock.

The Mincor Nickel Operations (MNO) is expected to consist of Cassini and the Northern Operations (Long and Durkin North) at commencement, with the Miitel mine contributing in the back half of the project life.

Cassini
Cassini is located on the southern section of the Widgiemooltha Dome. The geology of the Widgiemooltha Dome and the area to the south consists of a thrust repeated sequence of basic ultramafic extrusive and intrusives, with intercalated sediments and acid volcanics with nickel sulphide orebodies found at the base of the ultramafic sequence.

The Cassini orebody as interpreted in the Mineral Resource is split into eight lodes, labelled CS2-CS9. From a mining perspective, the Mineral Resource has been delineated into two main areas based on spatial characteristics. These mining areas have been named by the dominant lode (CS2 or CS4). The CS2 Area (CS2, CS3, CS6, CS7 and portion of CS5 lodes) consists of east-west trending parallel lodes, mainly offset, dipping at ~45° to the south with thickness from ~1m to ~7m, averaging 3m.

The CS2 Area extends from ~260mRL (approx. 50mbs) to ~-240mRL (480m vertical extent). Grades and orebody thickness are inconsistent above ~75mRL.

The CS4 Area (CS4, CS8, CS9 and portion of CS5 Lodes) consists o ........


Mining Methods

  • Overhand Cut & Fill
  • Longhole stoping
  • Longhole open stoping
  • Avoca
  • Longitudinal stoping
  • Cemented backfill


Summary:

The Definitive Feasibility Study has adopted an underground contractor model for mining costs.

The primary mining method proposed is bottom-up longitudinal longhole stoping (LHS) with modified Avoca assuming cemented rockfill (CRF).

Cassini
The Cassini mine will be accessed via a new box-cut and portal. Capital works for the box-cut, commenced in February 2020 and are expected to be completed by April 2020. The stope optimisation process showed that the economic portion of the Cassini orebody (commences from 250m below surface). Based on geotechnical analysis and the results of geotechnical drilling, the box-cut has been located ~700m to the south of the orebody where near-surface ground conditions are more favourable.

A twin decline system will be developed from the box-cut zone to the production zone, with access and return air declines excavated in parallel, allowing primary ventilation to be established early in the mine life. Ventilation and secondary egress will be via a raise system developed from the ventilation decline to the box-cut.

Vertical sub-level intervals are 15m floor-to-floor, allowing good drill and blast control. Areas with no top access (i.e. crown stopes or levels directly beneath sill pillars) will be mined using conventional longhole open stoping, retaining in-situ pillars for support. Maximum open stope strike lengths of 30m have been applied based on geotechnical studies. Slots to open stoping spans ........


Crushing and Grinding


Processing

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Summary:

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Production:

CommodityUnitsAvg. Annual (Projected)LOM (Projected)
Nickel kt 1463
All production numbers are expressed as metal in concentrate.


Reserves at June 30, 2022:

CategoryTonnage CommodityGradeContained Metal
Proven 19,000 t Nickel 2.9 %
Probable 2,465,000 t Nickel 2.9 %
Proven & Probable 2,484,000 t Nickel 2.9 % 71,300 t
Measured 156,000 t Nickel
Indicated 3,530,000 t Nickel
Inferred 698,000 t Nickel
Total Resource 4,384,000 t Nickel 3.95 % 173,100 t



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Dec 19, 2022
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....................... Subscription required ....................... Subscription required Subscription required Dec 19, 2022
....................... Subscription required ....................... Subscription required Subscription required Dec 19, 2022
....................... Subscription required ....................... Subscription required Subscription required Dec 19, 2022
....................... Subscription required ....................... Subscription required Subscription required Dec 19, 2022
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Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Press Release 2022
Press Release 2022
Quarterly Report 2022
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
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News:

NewsDate
Mincor holds out for a better offer March 22, 2023
Wyloo Metals announces on-market takeover offer for Mincor Resources March 21, 2023

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