Millennium Minerals announced outstanding metallurgical test results which provide more strong evidence that its sulphide expansion strategy at the 100%-owned Nullagine Gold Project in WA's Pilbara will be a technical and economic success. The latest tests were conducted on a range of pyrite and arsenopyrite ore samples with varying degrees of refractory behaviour from the Golden Eagle deposit, the large deposit defined to date at Nullagine. The test work was undertaken using two innovative processing techniques - in-mill oxidation (INOX) and pressurised in-mill oxidation (PINOX) - both of which have been patented by Millennium. Millennium has previously announced that tests conducted on samples of mildly refractory pyrite-dominant ore and moderately refractory pyrite/arsenopyrite samples from Golden Eagle generated recoveries of over 80% using its in-mill oxidation (INOX) process. The latest results now confirm that gold recoveries of ~70% can be generated from highly refractory arsenopyrite-dominant ore from Golden Eagle using the pressure oxidation (PINOX) process. Previous cyanidation test work on this highly refractory ore delivered gold recoveries averaging less than 30%, meaning this mineralisation has never previously been considered economic. Construction of the expanded plant is underway, with the gravity concentration spirals on site and the mills expected to arrive in March. Stockpiling of sulphide concentrates will start later this quarter with plant commissioning scheduled for early April. The Golden Eagle deposit is expected to provide baseload feed at Nullagine for the next two years. In light of these strong metallurgical results, test work has been initiated on samples from the Golden Gate deposit. This will enable Millennium to complete a maiden underground Reserve and Resource estimate for Golden Gate. This estimate will form part of the Company's annual Reserve and Resource statement, which is expected to be released in early February, along with its production and cost guidance for the year to December 31, 2019.