Overview
Stage | Production |
Mine Type | Open Pit & Underground |
Commodities |
|
Processing |
- Gravity separation
- Centrifugal concentrator
- ACACIA reactor
- Filter press plant
- Flotation
- Agitated tank (VAT) leaching
- Solvent Extraction & Electrowinning
|
Mine Life | 5 years (as of Jan 1, 2020) |
Red River started gold production from the Hillgrove mine’s Bakers Creek stockpile in December 2020 and trucked its first load of gold concentrate from the mine on June 18 2021.
Red River has undertaken a detailed review in preparation for the restart of the Hillgrove Gold Project. The outcome of the review was a lean capital efficient staged restart process, with Stage One (processing of Bakers Creek Stockpile) scheduled to commence at the end of CY2020, and Stage Two (full restart of UG mining operations) scheduled to commence at the end of CY2021. |
Latest News | Red River marks Hillgrove restart with first gold pour March 1, 2021 |
Source:
Red River acquired the Hillgrove Gold Project in August 2019 from a private vendor.
Deposit Type
- Orogenic
- Vein / narrow vein
Summary:
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).
Summary:
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.
Processing
- Gravity separation
- Centrifugal concentrator
- ACACIA reactor
- Filter press plant
- Flotation
- Agitated tank (VAT) leaching
- Solvent Extraction & Electrowinning
Flow Sheet:
Summary:
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.
Reserves at July 29, 2020:
Category | Tonnage | Commodity | Grade |
Measured
|
413 kt
|
Gold
|
3.5 g/t
|
Measured
|
413 kt
|
Antimony
|
4.2 %
|
Measured
|
413 kt
|
Gold Equivalent
|
10.3 g/t
|
Indicated
|
2,303 kt
|
Gold
|
4.8 g/t
|
Indicated
|
2,303 kt
|
Antimony
|
1.5 %
|
Indicated
|
2,303 kt
|
Gold Equivalent
|
7.1 g/t
|
Inferred
|
2,235 kt
|
Gold
|
4 g/t
|
Inferred
|
2,235 kt
|
Antimony
|
1 %
|
Inferred
|
2,235 kt
|
Gold Equivalent
|
5 g/t
|
Total Resource
|
4,951 kt
|
Gold
|
4.3 g/t
|
Total Resource
|
4,951 kt
|
Antimony
|
1.5 %
|
Total Resource
|
4,951 kt
|
Gold Equivalent
|
6.4 g/t
|
Financials:
| Units | 2020 |
Operating Income
|
M AUD
| ......  |
- Subscription is required
Corporate Filings & Presentations:
Document | Year |
...................................
|
2020
|
...................................
|
2019
|
- Subscription is required.
News:
Aerial view:
- Subscription is required.