Strandline Resources Limited announced more outstanding metallurgical test results which further strengthen the financial outlook, product offtake negotiations and funding strategy for its Coburn mineral sands project in WA's Mid West. The latest tests included optimisation to equipment settings and attritioning of the feed material and have further validated that Coburn can efficiently deliver premium-quality mineral sands products using conventional processing technology. They also demonstrate the scope to further increase recoveries and therefore production of the higher-value zircon and rutile final product streams. zircon and rutile final product streams. The process enhancements are expected to increase average annual project revenues relative to the Coburn Definitive Feasibility Study (DFS) (announced in April-2019) and support current offtake and funding activities. Exceptional high-quality final mineral sands products have been achieved from the latest confirmatory metallurgical testwork program. A representative bulk heavy mineral concentrate (HMC) sample produced during the DFS wet concentration plant (WCP) testwork was processed through an optimised mineral separation plant (MSP) flowsheet. The tests were performed at TZMI's Allied Mineral Laboratories and utilised full scale or scalable equipment configured as per the DFS flowsheet design (with no impact to DFS capital or operating cost estimates). Optimisation of equipment settings and attrition scrubbing of the HMC feed material resulted in improved separation efficiencies of valuable minerals and product specifications. The rutile (HiTi) product stream also benefited from directing more rutile mineral to the underutilised cleaner stages of the MSP, rather than reporting mineral into product earlier in the flowsheet. This resulted in a cleaner, higher TiO2 grade rutile of 93.3% TiO2 (up from 90.1% TiO2) as well as an improved rutile recovery from 70.9% to 84.7%. The premium zircon product stream benefited from improving separation efficiency at each electrostatic separation stage of the MSP. This resulted in higher zircon recovery from 98.7% to 99.7%. MSP zircon recovery comprises 58.3% into premium zircon and a further 41.4% into zircon concentrate as contained zircon.