Overview

Mine Type	Underground
Commodities	Nickel
Mining Method	Longhole stoping Longitudinal stoping Avoca Cemented rockfill
Production Start	...
Shapshot	Cassini mine is part of Kambalda Nickel Operations (“KNO”). First development ore was extracted from the Cassini in March 2022. The successful firing and extraction of the first production stope at the Cassini Nickel Mine in 29 November 2022. Wyloo will temporarily shut down the Western Australian nickel mines due to low nickel prices. Wyloo will now put the Cassini, Long and Durkin mines into care and maintenance from May 31, 2024.
Related Asset	Kambalda Nickel Operation

Deposit type

• VMS

Summary:

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 of parallel lodes striking northwest/southeast at ~125° and dipping at ~75-80° to the southwest. Average widths for the CS4, upper CS5 and CS9 lodes are 2-3m, with the CS5 lode thickening to 5-7m and up to 11m in parts below ~-250mRL (grades in this area also increase). The area extends from ~100mRL to -380mRL. Grades and thickness are inconsistent above ~10mRL.

Mining Methods

- subscription is required.

Comminution

Crushers and Mills

Processing

- subscription is required.

Production

Personnel

Mine Management

Source

Job Title	Name	Profile	Ref. Date
.......................	.......................		Jan 22, 2024
.......................	.......................		Jan 22, 2024
.......................	.......................		Jan 22, 2024