Black Rock Mining Ltd (ASX:BKT; OTC:BKTRF) is an Australia-based mineral exploration and development company focused on graphite production; it holds an 84% interest in the world-class Mahenge Graphite Project in Tanzania's Ulanga district, which spans 324 square kilometers and hosts one of the largest JORC-compliant flake graphite resources globally, with 213 million tonnes at 7.8% total graphitic carbon and ore reserves of 70 million tonnes at 8.5% TGC. The project plans a four-stage construction schedule to produce up to 347,000 tonnes per annum of premium flake graphite concentrate, including up to 99% LOI ultra-purity grades, for a 26-year mine life; key products encompass coarse, medium, and fines flake graphite suitable for battery anode materials, refractories, lubricants, and other industrial applications, supported by simple processing with dry stack tailings, low technical risk, and access to rail, hydro grid power, and ports near Mtwara and Dar es Salaam. Founded in 2000 and headquartered at Level 1, 1 Walker Avenue, West Perth, Australia, the company operates primarily in Tanzania through subsidiaries Mahenge Resources Ltd and Faru Graphite Corporation Ltd, targeting global battery supply chains and steel industries with first-quartile costs of US$518 per tonne and strong economics including post-tax NPV10 of US$1.4 billion. Recent developments include securing US$179 million in debt financing in 2024 from the Development Bank of Southern Africa, Industrial Development Corporation of South Africa, and CRDB Bank for Module 1 construction, working capital, and contingencies; a US$40 million equity investment from strategic partner POSCO International in 2024-2025, increasing POSCO's stake to 19.99% and securing long-term offtake for Mahenge Module 2 fines; an additional US$25 million credit approval under the facilities agreement in May 2025; an oversubscribed A$4 million share purchase plan in October 2025 to accelerate early works such as site earthworks and construction preparatory activities; and commencement of early works at Mahenge announced in September 2025, alongside ongoing negotiations with the Tanzanian government on ownership structure.