Breaker Resources NL announced to report the completion of its pre-resource metallurgical testwork program on ore samples from the company's 100%-owned Lake Roe gold project, 100km east of Kalgoorlie in WA. The program extends the scope of initial testwork reported in October 2017. The work included gold extraction testing of reverse circulation (RC) chip samples over an extended area, assessment of ore grind size on gold extraction and further assessment of gold leach reagent and oxygen requirements. The metallurgical testwork was undertaken by Australian Laboratory Services (ALS) in Perth. Previously released testwork was limited to comminution studies on diamond core and an assessment of gravity- and leach- recoverable gold on two composite RC samples. The testwork described in this report consisted of: (i) gravity and leach gold extraction testing of three more oxide RC composite samples and three more fresh (primary) RC composite samples; (ii) gravity and leach gold extraction testing of "horizontal" composites of the oxide and fresh RC material above; and (iii) assessment of ore grind size and gravity and leach gold recovery using three different size fractions of diamond core samples of oxide and fresh mineralisation. An assessment of the gold leach reagents and oxygen requirements was made for each phase of the testwork. The initial part of the new testwork involved an assessment of the gravity recoverable gold, and the gold recoverable by cyanide leach after gravity extraction on three oxide (weathered) and three fresh (primary) composite samples of RC fines (BRBMET_RC003 to BRBMET_RC008). The RC samples were found to have an as received P80 particle size of approximately 39-60m, so no pre-leach grinding was undertaken. Each sample was subjected to ALS standard gravity recoverable gold testing prior to cyanidation of the gravity tail. In these tests, gravity concentrate from a centrifugal concentrator is subjected to mercury amalgamation. The amalgam tail is recombined with the ore tail ahead of cyanide leaching. Total gold recoveries of 95.6% to 98.5% were achieved in the oxide zone and 95.6% to 98.0% in the fresh zone. Gravity recoverable gold in the oxide zone averaged 35% with a range of 14% to 72%. Gravity recoverable gold in the fresh zone averaged 43% with a range of 22% to 60%. There is no obvious correlation between head grade and the percentage of gravity recoverable gold (or total gold recovery) in the oxide or primary zone. Maximum gold extraction from gravity tails was achieved within 24 hours of leach time. Reagent consumption appears variable across the suite of samples with cyanide consumption varying from 0.54 kg/t to 1.01 kg/t and lime consumption in the range 0.35 kg/t to 2.11 kg/t.