Black Rock Mining Limited (Black Rock), formerly Green Rock Energy Limited, is an Australia-based graphite resources company. The Company has graphite mining licenses in the Mahenge region, Tanzania. The Company focuses on joint ore reserves committee (JORC) resource at Epanko North, Mahenge, and further exploring and drilling the Ulanzi, Kituti, Cascade and Ndololo prospects. The Company's tenements include PL 7802/2012, Mehenge North, which covers an area of around 290 square kilometers; PL 10427/2014, Mehenge southwest, which covers an area of around 200 square kilometers; PL 10426/2014, Mehenge southeast, which covers an area of around 290 square kilometers, and PL 10111/2014, Makonde, which covers an area of around 20 square kilometers. The Company's subsidiaries include Green Heat Resources Pty Ltd, Green Rock Geothermal Pty Ltd and Mahenge Resources Limited.