Blackstone Minerals Limited reported the production of its first batch of battery grade Nickel: Cobalt: Manganese (NCM) 811 Precursor sample. The NCM811 Precursor sample was produced in Simulus Engineer's laboratory using a nickel concentrate blend that includes material from Blackstone's Ban Phuc Disseminated Sulfide (DSS) orebody and other third-party feed (3PF) feed sources. The NCM811 Precursor sample produced achieved a NCM purity of >99.7%. The chemical analysis of the first batch precipitate for other impurities have met battery grade's specification: Ca <100, all 4 meet specification; Cu < 10, all 4 meet specification; Cr < 10, all 4 meet specification; Mg <100, 1 of 4 below (meets) specification; and Zn <10, all 4 meet specification. Blackstone Minerals also confirms the Pre-Feasibility Study ("PFS") for the development of a Downstream Refinery in Northern Vietnam ("Ta Khoa Refinery Project", "TKR" or the "Project"), will be released on 26 July 2021.