The Broken Hill Cobalt Project Resource

The Broken Hill Cobalt Project comprises three large tonnage cobalt deposits (Pyrite Hill, Big Hill & Railway) hosted by an extensive sequence of pyritic-quartz-albite gneiss of the Himalaya Formation. The deposits were the subject of an updated Mineral Resource estimate released to the market on 4 April 2019 (“Significant Thackaringa Resource Upgrade”) and comprising 111 Mt at 889 ppm cobalt-equivalent (CoEq) (715 ppm Co and 7.8% S) for 79,500 tonnes contained cobalt (at a 400 ppm CoEq cut-off) (refer to Table 1 below for a complete summary by deposit and Mineral Resource classification).

Table 1. The updated Mineral Resource estimates for the Broken Hill Cobalt Project Cobalt deposits (at a 400ppm CoEq cut-off) detailed by Mineral Resource classification (CoEq = Co ppm + S % * 22.235).
Note minor rounding errors may have occurred in compilation of this table.

The Company confirms it is not aware of any new information or data that materially affects the information included in the original market announcements and, in the case of estimates of Mineral Resources, that all material assumptions and technical parameters underpinning the estimates in the relevant market announcement continue to apply and have not materially changed. COB confirms that the form and context in which the Competent Person’s findings are presented have not been materially modified from the original market announcement.