Red River Resources Limited announced positive results from work to restart gold production at its Hillgrove Gold Project in NSW. Metallurgical testwork carried out by Consep and Core Resources has demonstrated the viability of treating Bakers Creek Waste Dump material through the existing Hillgrove Mill with total gold recovery to saleable gold doré produced onsite estimated to be 75-80%. Red River plans to restart gold production at Hillgrove in 2020 using infrastructure to take advantage of current high gold price. Work has commenced on a conceptual flowsheet, and Red River will keep the market updated on progress. Metallurgical testwork was carried out by Consep (gravity concentrate) and Core Resources (flotation concentrate and cyanide leach tests) on representative samples derived from a 423kg bulk sample taken from the Bakers Creek Waste Dump in 2019 by Red River. Consep Gravity Concentrate Testwork: Consep tested Bakers Creek Waste Dump samples using its extended gravity recoverable gold (GRG) test procedure and found samples to contain a high GRG content of 81.1%. The GRG is predominately classed as Coarse. The remaining 18.9% of the gold may be considered non-GRG, which is infeasible to recovery by gravity methods. Modelling of a suitable gravity circuit by Consep indicates that 60-65% of the gold in the Bakers Creek Waste Dump would be recovered by gravity methods to a gravity gold concentrate. It is estimated that in excess of 95% of the contained gold in the gravity gold concentrate will be recovered by cyanide leaching to gold doré on site. Gravity Recoverable Gold (GRG) is the portion of gold in an ore that can be feasibly recovered by gravity concentration. Remaining gold, or non-gravity recoverable gold, is the portion which is too fine or inadequately liberated at the finest viable grind size to be recovered by gravity concentration. The GRG value of the ore is expressed as the percentage of the total gold that is recovered by the standardized GRG test. This testing method is widely endorsed in the global gold mining industry. Core Resources Flotation Concentrate Testwork: Core Resources' flotation testwork on the Bakers Creek Waste Dump samples generated a gold recovery of 83.9% to a flotation gold concentrate. This concentrate then underwent gold cyanide leaching tests which indicated a gold recovery of 85%. Conceptual Flowsheet: Highly positive metallurgical testwork outcomes from the Bakers Creek Waste Dump enabled Red River to focus on a conceptual flowsheet to maximise the gold recovery using existing plant and infrastructure on site. Using existing infrastructure, it will load and truck material from Bakers Creek Waste Dump 4.2km to the Hillgrove Mill, where it will be crushed and ground. A new gravity gold concentrator (Knelson gravity concentrator or similar) will be installed in the grinding circuit to produce a gravity gold concentrate. It is estimated that approximately 60-65% of gold contained in the feed material will report to the gravity concentrate. The remaining material produced from the grinding circuit will then be treated through the existing flotation circuit to produce a flotation concentrate. Based on the testwork results, Red River estimates that a further 20-25% of gold contained in the feed material will report to the flotation concentrate. Total gold recovery to the combined gravity and flotation concentrates is estimated to be about 80-90%. The gravity gold concentrate and flotation gold concentrate will then be leached on site using cyanide to produce saleable gold doré. The total gold recovery (of gold contained in the feed material) to a saleable gold doré is estimated to be 75-80% of the contained gold in the Bakers Creek Waste Dump feed material. The current gravity circuit in the Hillgrove Mill would require upgrading (XD20 model Knelson Concentrator or similar) to process Bakers Creek material and Red River would add a cyanide destruction circuit to the mill. Red River is also investigating the potential of an intensive cyanide leach circuit to maximise the gold recovery from the gravity gold concentrate. Bakers Creek Waste Dump Historical Sampling Review: The Bakers Creek Waste Dump was created during the mining of the Bakers Creek Mine, which produced 303,900oz gold from 175,980 tonnes of ore at approximately 49 g/t Au during operation from 1877 to 1921 (production recorded up to 1916). Ore was hand sorted underground and again on surface, with the dump containing material rejected during surface hand sorting. The dump is approximately 105m by 70m and 15-20m deep. The road that cuts the Bakers Creek Waste Dump was constructed by Straits Resources and is the main haul road to the Hillgrove Mill (distance to Hillgrove Mill of 4.2km).