• Data Access
  • Your Email  
  • Your Email  
Keep me signed in.
Forgot your password?
Close
  • Forgot Your Password?
  • Enter the email you signed up with and we'll email it to you.
  • Your Email  
Close
Back
MDO
Mining Data Solutions
  • Home
  • Database
  • Subscribe
  • Sign In
  • Sign In
Australia
King of the Hills (Expansion) Project (King of the Hills Mine)

This page is not tailored to
devices with screen width under 750 px.
 Location:
29 km N from Leonora, Western Australia, Australia

  Project Contacts:
Level 2 35 Ventnor Avenue
West Perth
Western Australia, Australia
6005
Phone  ...  Subscription required
WebsiteWeb
Additional Resources for Suppliers & Investors
Drill results over 30 g/t Au
Stay on top of recent discoveries.
Search drill results by commodity and grade.
Largest mines in the Americas
Mining and mill throughput capaciites.
Full profiles of select mines and projects.
Deepest underground mines
Shaft depth and mill throughput data.
Full profiles of select mines and projects.
Heavy mobile equipment
HME type, model, size and quantity.
Full profiles of select mines and projects.
Permitting and construction projects
Projects at the permitting or construction stage. Full profiles of select projects.
Mines with remote camps
Camp size, mine location and contacts.
Full profiles of select mines and projects.
Mines & projects in Australia
A list of country's mines and projects.
Full profiles of select mines and projects.
  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

Thank you for browsing through mine profiles compiled by the Mining Data Online team.

Would you like to subcribe or schedule a Demo?
  • Name:
     
  • Company:
     
  • Position:
     
  • Phone:
  • Email:
  • Message:

Overview

StageConstruction
Mine TypeOpen Pit / Underground
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
  • Longhole open stoping
Processing
  • Gravity separation
  • Smelting
  • Concentrate leach
  • Agitated tank (VAT) leaching
  • Carbon in leach (CIL)
  • Carbon adsorption-desorption-recovery (ADR)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)
Mine Life16 years (as of Jan 1, 2022)
Latest NewsRed 5 chooses Macmahon at King of the Hills     March 9, 2021


Owners

Source: p. 8
CompanyInterestOwnership
Red 5 Ltd. 100 % Indirect

Deposit Type

  • Vein / narrow vein
  • Orogenic


Summary:

The KOTH mineralisation is considered to be part of an Archean Orogenic gold deposit with many similar characteristics to other gold deposits within the Eastern Goldfields of the Yilgarn Craton.

Gold mineralisation is associated with sheeted and stockwork quartz vein sets within a hosting granodiorite stock and pervasively carbonate altered ultramafic rocks. Mineralisation is thought to have occurred within a brittle/ductile shear zone with the main thrust shear zone forming the primary conduit for the mineralising fluids. Preexisting quartz veining and brittle fracturing of the granite created a network of second order conduits for mineralising fluids.

Brittle fracturing along the granodiorite contact generated radial tension veins, perpendicular to the orientation of the granodiorite, and zones of quartz stockwork. These stockwork zones are seen in both the granodiorite and ultramafic units and contain mineralisation outside the modelled continuous vein system (High Grade Veins).

Gold appears as free particles (coarse gold) or associated with traces of base metals sulphides (galena, chalcopyrite, pyrite) intergrown within quartz along late stage fractures.

The Western Flank mineralised zone strikes 30 degrees west of true north over a distance of 700m and plunges to the southwest. Individual lodes dip east at 35 to 45 degrees. Eastern Flank mineralisation strikes 30 degrees east of true north over a distance of 700m and is vertical. Stockwork mineralisation runs along the contact of the granodiorite/ultramafic contact which strikes 30 degrees east of true north over a distance of 4km and is vertical. Mineralisation has been tested to approximately 400m below surface and remains open.


Mining Methods

  • Truck & Shovel / Loader
  • Longhole open stoping


Summary:

The FFS open pit mining operations will deliver ore to a new processing plant to be constructed at KOTH.

The mining method proposed for all deposits is the conventional use of excavators in backhoe configuration as the primary loading fleet, loading rigid off-highway rear dump trucks. This configuration is common to the Goldfields region of Western Australia (WA) and is considered a low-risk solution.

There is 1.5Mdmt of TMM in the March Quarter 2022, comprising 870 k dmt of waste and 630 k dmt of ore. The waste material is being classed as capitalised pre-strip to access a sustainable source of ore feed at KOTH for subsequent periods. The ore is placed on the ROM pad.

Mining at Rainbow starts in June Quarter 2022 and is completed 15 months later. While waste movement is required to access ore, sustainable ore production occurs within the first quarter of mining, and therefore the waste has not been defined as capitalised pre-strip. It should be noted, however, that the ore will likely only become available in the latter half of that quarter.

There is a contingency for ensuring continuity of ore feed in the initial year of process plant operation with approximately 1.7Mdmt of ore on existing surface stockpiles.

Mining at Cerebus-Eclipse starts in 2029 and continues for 12 months, with Centauri being a continuation of operation for the mining fleet, starting in 2030. The haul road and infrastructure used at Cerebus-Eclipse will be used for the Centauri operation.

The general progression of the production schedule for KOTH is from south to north, depleting the southern half of the pit in time for the short haul of waste from the northern cut-backs. Depleting the southern half of the KOTH pit also results in the open cut mining operation avoiding the UG portal and vent raise for the UG operation mine plan. This approach removes the requirement for any capital works required in establishing a new portal, providing access to that portal location (both surface and underground) and establishing supporting underground infrastructure such as a new vent raise.

While the average grade of the southern half of the pit is not as high as in the northern half of the pit, the lower strip ratio in the south compensates for this lower grade and provides earlier access to sustainable ore supply.

Waste from the open pits will be dumped on a ‘short haul first’ logic. From an immediate cost perspective, this is advantageous; however, this approach will need to be balanced with the levelling of truck numbers over the LOM, so as not to incur additional mobilisation/demobilisation costs for short periods of operation.

The waste dump capacities as designed can contain all waste from the pits. The KOTH external waste dumps do exceed the recommended height limits later in the LOM, which will need to be proactively addressed during the operational period.

The primary mining fleet for the KOTH open pit are 250 t class excavators (in backhoe configuration), paired with 140 t class haul trucks.

The primary mining fleet for the satellite deposits is one 120 t class excavator (in backhoe configuration), paired with five 100 t class haul trucks.

KOTH is currently an operating underground gold mine, and the KOTH FFS is predicated on the continuation of existing underground mining practices. Mine design parameters are based on current site guidelines, which are well understood and have been successfully implemented.

The proposed primary mining method is long-hole open stoping, with minor amounts of airleg stoping in flat dipping areas of the orebody (<1% of ore tonnes). Stoping will follow a top-down sequence, commencing at the extremities of each level and retreating to the level access. Rib pillars will remain between adjacent stopes to maintain mine stability. The proposed mining methods and sequence are generally a continuation of current operating practices at an increased production rate.


Crushing and Grinding
Crusher / Mill TypeModelSizePowerQuantity
SAG mill


Processing

  • Gravity separation
  • Smelting
  • Concentrate leach
  • Agitated tank (VAT) leaching
  • Carbon in leach (CIL)
  • Carbon adsorption-desorption-recovery (ADR)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)

Flow Sheet: Subscription required

Summary:

The KOTH processing facility has essentially been designed to process 4Mtpa of fresh open pit and underground ore. However, allowance has been incorporated into the design for future throughput upgrade to 6Mtpa with limited production interruption and low capital requirements. The primary crushing circuit has been designed for 6Mtpa. The mill selection and the layout of the grinding circuit allow for a future ball mill, with allowance provided for a second gravity recovery line. The design also allows for two additional future leach tanks and a tailings thickener (if required).

The processing plant will be designed to operate seven days per week at a nominal treatment rate of 500 dry t/h on fresh ore at a grinding circuit utilisation rate averaging 91.3% over the Life of Mine.

The processing facility unit processes are based on proven technology for gold recovery following a processing route of:

• Primary crushing by a gyratory crusher to product size ........

Recoveries & Grades:

CommodityParameterAvg. LOM
Gold Recovery Rate, %  ......  Subscription required
Gold Head Grade, g/t 1.24
Subscription required - Subscription is required.

Projected Production:

CommodityUnitsAvg. AnnualLOM
Gold koz 1462,350
All production numbers are expressed as metal in doré.

Operational Metrics:

Metrics
Stripping / waste ratio  ......  Subscription required
Daily ore mining rate  ......  Subscription required
Waste tonnes, LOM  ......  Subscription required
Ore tonnes mined, LOM  ......  Subscription required
Tonnes processed, LOM  ......  Subscription required
Annual processing capacity  ......  Subscription required
* According to 2020 study.
Subscription required - Subscription is required.

Reserves at September 15, 2020:

CategoryOreTypeTonnage CommodityGradeContained Metal
Probable In-Situ (OP) 62.2 Mt Gold 1.1 g/t 2,204 koz
Probable In-Situ (UG) 2.4 Mt Gold 2.3 g/t 180 koz
Probable Total 64.6 Mt Gold 1.2 g/t 2,384 koz
Indicated In-Situ (OP) 65.8 Mt Gold 1.3 g/t 2,720 koz
Indicated In-Situ (UG) 4 Mt Gold 2.2 g/t 290 koz
Indicated Total 69.8 Mt Gold 1.3 g/t 3,010 koz
Inferred In-Situ (OP) 14.6 Mt Gold 1.4 g/t 650 koz
Inferred In-Situ (UG) 6.3 Mt Gold 2 g/t 410 koz
Inferred Total 20.9 Mt Gold 1.6 g/t 1,060 koz
Total Resource In-Situ (OP) 80.4 Mt Gold 1.3 g/t 3,370 koz
Total Resource In-Situ (UG) 10.3 Mt Gold 2.1 g/t 700 koz
Total Resource Total 90.7 Mt Gold 1.4 g/t 4,070 koz

Commodity Production Costs:

CommodityUnitsAverage
Credits (by-product) Gold AUD  ......  Subscription required *
All-in sustaining costs (sold) Gold AUD  ......  Subscription required *†
C1 cash costs Gold AUD  ......  Subscription required *†
Assumed price Gold AUD  ......  Subscription required *
* According to 2020 study / presentation.
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units2020
Combined mining costs ($/t milled) AUD 32.5 *
Processing costs ($/t milled) AUD  ......  Subscription required
* According to 2020 study.
Subscription required - Subscription is required.

2020 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Pre-Production capital costs $M AUD  ......  Subscription required
Sustaining CapEx $M AUD  ......  Subscription required
Total CapEx $M AUD  ......  Subscription required
OP/UG OpEx $M AUD  ......  Subscription required
Processing OpEx $M AUD 755
G&A costs $M AUD 108
Total OpEx $M AUD  ......  Subscription required
Royalty payments $M AUD  ......  Subscription required
Gross revenue (LOM) $M AUD  ......  Subscription required
Net revenue (LOM) $M AUD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M AUD  ......  Subscription required
After-tax Cash Flow (LOM) $M AUD  ......  Subscription required
Pre-tax NPV @ 8% $M AUD  ......  Subscription required
After-tax NPV @ 8% $M AUD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
After-tax IRR, %  ......  Subscription required
After-tax payback period, years  ......  Subscription required
Subscription required - Subscription is required.

Proposed Heavy Mobile Equipment as of September 15, 2020:
HME TypeSizeQuantityLeased or
Contractor
Backhoe 120 t 1 Leased
....................... Subscription required ....................... Subscription required 4 Leased
....................... Subscription required ....................... Subscription required 28 Leased
....................... Subscription required ....................... Subscription required 5 Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 15, 2020
....................... Subscription required ....................... Subscription required Subscription required Sep 15, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
Subscription required - Subscription is required.

News:

NewsDate
Red 5 chooses Macmahon at King of the Hills March 9, 2021
Red 5 approved to be King of the Hills March 4, 2021
King of the Hills approval cements Red 5’s golden future December 16, 2020
Red 5 awards MACA contract ahead of mine restart November 2, 2020

Subscription required - Subscription is required.

Terms of Use Privacy Policy © 2020 MDO Data Online Inc.