Blackstone Minerals Limited announced the completion of the PFS for the development of a Downstream Refinery in Northern Vietnam. The PFS is a critical milestone for the Company and reiterates the competitive advantages of nickel sulfide projects and adding value via an integrated downstream processing strategy. The PFS demonstrates that a very low capital intensity is required for the TKR to produce Class I nickel at a scale that would make Blackstone a globally significant producer. The PFS considers a refinery design to process up to 400ktpa (Base Case) of nickel concentrate, confirming a technically and economically robust flow sheet to upgrade nickel sulfide concentrate to produce battery grade NCM811 Precursor for the Lithium-ion battery industry. Blackstone's development strategy is supported by using 3PF to supplement nickel concentrate supply from the Ta Khoa Nickel Project. Concentrate feed from Blackstone's Ban Phuc Disseminated Sulfide (DSS) orebody forms part of the overall concentrate blend. With ongoing drilling and further exploration success Blackstone believes the Base Case Refinery has the potential to be fed entirely by feedstock from the Ta Khoa Nickel Project. The company's decision to proceed with the development of the Ta Khoa Refinery is contingent upon a number of factors including but not limited to future exploration success at Blackstone's Ta Khoa Mine, the ability to secure offtake for 3PF and consumer demand for battery grade NCM811 Precursor. Indicative quantum and concentrate specifications have been received from all 3PF concentrate Blackstone has included in this PFS for the Base Case TKR. Based on current and confidential discussions, BSX believes it can secure sufficient supply to meet the demand for the Base Case TKR.