Orogenic gold-antimony-tungsten mineralisation at Hillgrove is hosted in multiple steeply dipping vein/shear systems contained within the Hillgrove Mineral Field. There is a strong zonation in the vein systems transitioning from shallow antimony dominant mineralisation to gold dominant mineralisation at depth. All known vein systems are open at depth, with potential transition to high grade gold dominant mineralisation at depth.

The Hillgrove Mineral Field covers approximately 9km x 6km, with more than 200 individual mineral occurrences identified in field. Red River controls the entirety of the Hillgrove Mineral Field and holds 225km2 of exploration leases and 17km2 of mining leases (or equivalent).

UG Operations will commence in the Metz Mining Centre, allowing Red River to take advantage of the existing UG development & infrastructure to target the high-grade Lode systems (Syndicate, Blacklode & Sunlight).

The Metz Mining Centre is currently on active care & maintenance, with all infrastructure (ventilation, power, water) in place to support near term restart of mining. Previous owners invested significant capital in development the Metz Mining Centre, with approximately 3,950m of declines and capital development, 3,400m of ore drives in the Syndicate Lode, 500m of ore drives in Blacklode and 320m of ore drives in Cox’s Lode.

Red River estimates more than $200 million has been invested in the Hillgrove Gold Project since 2004 in the following key areas:
• 250ktpa capacity processing plant (constructed in 2008/2009), capable of producing saleable gold and gold-antimony concentrates. Additional antimony alkali leach and electrowinning circuit, pressure oxidation circuit, gold cyanide leach circuit and gold room;
• Offices, warehouses, assay lab and maintenance facilities;
• Underground mining fleet and surface vehicle fleet;
• Lined tailing storage facility with approximately 2 years capacity; and
• Extensive underground development (>10km).

Hillgrove Processing Plant will produce a gold-antimony concentrate, a gold concentrate and a gold doré. Red River will also examine the potential to produce a saleable tungsten concentrate from the scheelite (CaWO4) mineralisation in the Metz Mining Centre.