Hillgrove

Hillgrove Gold Mine Overview

Red River’s Hillgrove Gold Mine is 30km from Armidale in New South Wales. When acquired in 2019, it had produced more than 730,000 ounces of gold (in bullion and concentrates), more than 50,000 tonnes of antimony (as metal and in concentrates) plus material amounts of by-product tungsten (in concentrates).

Hillgrove includes a 250ktpa capacity processing plant capable of producing antimony-gold and refractory gold concentrates, an antimony leach/EW/refining & casting plant, a gold cyanide leach circuit & gold room plus a pressure oxidation circuit. The site also has a fully lined modern tailing storage facility, constructed in 2006 with about two years of production storage capacity.

Hillgrove sources electricity from a 66kva grid connected power supply and water is sourced from storage dams and underground workings.

Hillgrove has office facilities, workshops, process plant offices, metallurgical laboratory building, first aid building, stores warehouse and core shed and yard.

The mine is a residential site, with most employees residing locally.

Hillgrove has a substantial high-grade JORC 2012 compliant Mineral Resource of 7.23Mt @ 4.5 g/t Au & 1.2% Sb (1,037koz contained Au & 90kt contained Sb). It is contained within six key hubs in the Hillgrove Mineral Field.

Red River controls the known Hillgrove Mineral Field, which hosts more than 200 known gold-antimony (Au-Sb) deposits. The majority of these deposits are steeply dipping vein systems within NW to WNW striking fracture systems, where the vein systems transition to gold dominant at depth with increasing levels of free gold. All known vein systems are open at depth.

First Stage One Ore fed into Hillgrove Mill

Hillgrove Gold Mine Production Restart

Red River completed the acquisition of the Hillgrove Gold Mine in August 2019 and  undertook a detailed restart study, focused on a staged restart approach, generating low operating risk and capital cost.

It commenced Stage 1 in 2020, processing material from the Bakers Creek stockpile, with Stage 2 operations to restart underground mining at Syndicate to produce  gold doré, gold concentrate and antimony-gold concentrate on track for CY2022.

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