• 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
Canada
Hardrock Project

This page is not tailored to
devices with screen width under 750 px.
 Location:
4 km S from Geraldton, Ontario, Canada

  Project Contacts:
2381 Bristol Circle, Suite B203
Oakville
Ontario, Canada
L6H 5S9
Phone  ...  Subscription required
Fax905-829-7880
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 Canada
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

StagePermitting
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Processing
  • Gravity separation
  • Inline Leach Reactor (ILR)
  • Agitated tank (VAT) leaching
  • Carbon in pulp (CIP)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)
Mine Life14.5 years (as of Jan 1, 2016)
Latest NewsPremier Reports Optimized Positive Feasibility Study for Hardrock     December 16, 2020


Owners

Source: p. 84,11
CompanyInterestOwnership
Centerra Gold Inc. 50 % Indirect
Premier Gold Mines Ltd. 50 % Indirect
Greenstone Gold Mines LP 100 % Direct
The managing partner of the Greenstone Partnership is Greenstone Gold Mines GP Inc. (“GGM”), which is owned 50/50 by Centerra and Premier. GGM is the current owner of all claims and leases comprising the Greenstone Gold Property.

Deposit Type

  • Banded iron formation hosted


Summary:

Gold deposits in the Hardrock deposit area are classic examples of epigenetic non-stratiform BIF-hosted gold deposits (historical North Zone and West Zone). Gold mineralization has resulted from the introduction of hydrothermal fluids in zones of high crustal permeability. Most mineralized occurrences in the Hardrock deposit area lie in a zone of deformation to the immediate north of, and genetically linked to, the Tombill-Bankfield Deformation Zone. Numerous Z-folds on various scales were formed in the deformation zone. Auriferous vein systems in the MacLeod-Cockshutt and Hard Rock mines are hosted by one of the Z-folds. This structure plunges shallowly west and is mimicked by minor parasitic folds in the BIF. The mineralization is found in upright sub-vertical axial planes that trend roughly east-west. The fold axes are shallowly west-plunging.

Two main styles of mineralization at the Hardrock deposit are quartz-carbonate stringer mineralization and sulfide replacement mineralization. Quartz-carbonate stringer mineralization generally consists of a series of narrow, tightly asymmetrically folded gold-bearing quartz-carbonate stringers, which are usually attenuated, transposed and dislocated in hook-like segments. The stringers are accompanied by a gold-bearing quartz-sericite-pyrite (±arsenopyrite) alteration halo about the stringers. Sulfide replacement mineralization occurs as variable pyrite, arsenopyrite and pyrrhotite replacement of Fe oxide within the hinge zones of folded BIFs. The auriferous sulfide replacement appears to have migrated outwards along the iron oxide bands from gold-bearing quartz-carbonate stringers occupying brittle axial planar tension fractures; this replacement mineralization yields grades of 7 g Au/t or greater.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Mining will be carried out using conventional open pit techniques with 10 m benches. An Owner mining open pit operation is planned with hydraulic shovels and mining trucks and includes outsourcing of certain support activities such as explosives manufacturing and blasting.

Production drilling of the 10 m benches will be by blast hole drill rigs with both rotary and down-the-hole (“DTH”) drilling capability. Blast holes are loaded with bulk emulsion. The majority of the loading in the pit will be carried out by three hydraulic face shovels, two 26 m3 and one 19 m3 and two front-end wheel loaders (21 m3). The shovels and loaders will be matched with a fleet of 181 t payload mine trucks. The presence of underground stopes was considered when designing the pits mainly for the void in the F-Zone, which is 150 m high and 30 m wide. Most of the other underground openings are backfilled with sand fill or rock fill.

Mining of the Hardrock main pit will occur in four phases (including the borrow pit) with a single phase for the smaller satellite pit to the east. Waste rock will be disposed of in four distinct waste dumps with three located around the pit and one further to the south. The open pit generates 548.9 Mt of overburden and waste rock (inclusive of historic tailings and underground backfill) over the life of mine (“LOM”) for an average LOM strip ratio of 3.87:1.

The LOM plan details 14.5 years of production, with a four month ramp up and commissioning period, followed by eighteen (18) months at a processing rate of 24,000 t/d ore, increasing to 27,000 t/d ore for the remainder of the mine life.


Crushing and Grinding


Processing

  • Gravity separation
  • Inline Leach Reactor (ILR)
  • Agitated tank (VAT) leaching
  • Carbon in pulp (CIP)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)

Flow Sheet: Subscription required

Summary:

The gold recovery process for the Hardrock Project consists of a crushing circuit (gyratory and cone), a grinding circuit HPGR and ball mill, pre leach thickening, a leach and carbon-in-pulp (“CIP”) circuit, cyanide destruction and tailings disposal, carbon elution and electrowinning, carbon regeneration and a gold refinery.

The crushing plant is a two-stage circuit consisting of a primary gyratory crusher and a secondary cone crusher. The crushing plant is expected to operate 67% of the time in order to achieve the daily throughput. A 30% design factor has been selected for the crushing circuit equipment so that the conveyors, crushers and other crushing equipment are sized to handle up to 2,194 t/h.

The run-of-mine ore is delivered by mine haulage trucks or by loader to the crushing plant. The ore is dumped into a 300 m3 concrete receiving hopper that feeds the primary crusher. A rock breaker will be used to break oversized rocks. The 652 kW gyratory crusher c ........

Recoveries & Grades:

CommodityParameterAvg. LOM
Gold Recovery Rate, %  ......  Subscription required
Gold Head Grade, g/t 1.02
Subscription required - Subscription is required.

Projected Production:

CommodityUnitsAvg. AnnualLOM
Gold koz 2884,193
All production numbers are expressed as metal in doré.

Operational Metrics:

Metrics
Stripping / waste ratio 3.87 *
Daily ore mining rate 27,000 t *
Waste tonnes, LOM 548.94 Mt *
Ore tonnes mined, LOM 141.71 Mt *
Total tonnes mined, LOM 690.65 Mt *
Daily processing capacity 27,000 t *
Tonnes processed, LOM 141.71 Mt *
Annual processing capacity 9,855 kt *
* According to 2016 study.

Reserves at December 31, 2019:

CategoryOreTypeTonnage CommodityGradeContained Metal
Probable In-Situ (OP) 70,858 kt Gold 1.02 g/t 2,324 koz
Indicated In-Situ (OP) 5,722 kt Gold 0.36 g/t 66 koz
Indicated In-Situ (UG) 6,846 kt Gold 3.91 g/t 860 koz
Inferred In-Situ (OP) 85 kt Gold 0.88 g/t 2 koz
Inferred In-Situ (UG) 85 kt Gold 3.57 g/t 1,235 koz

Commodity Production Costs:

CommodityUnitsAverage
Total cash costs Gold CAD 705 / oz *
All-in sustaining costs (AISC) Gold CAD 780 / oz *
Assumed price Gold USD 1,250 / oz *
* According to 2016 study / presentation.

Operating Costs:

Units2016
OP mining costs ($/t mined) CAD 2.18 *
OP mining costs ($/t milled) CAD  ......  Subscription required
Processing costs ($/t milled) CAD  ......  Subscription required
Total operating costs ($/t milled) CAD  ......  Subscription required
* According to 2016 study.
Subscription required - Subscription is required.

2016 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M CAD  ......  Subscription required
Sustaining CapEx $M CAD  ......  Subscription required
Closure costs $M CAD  ......  Subscription required
Total CapEx $M CAD  ......  Subscription required
OP OpEx $M CAD  ......  Subscription required
Processing OpEx $M CAD 1,061
Refining and transportation $M CAD  ......  Subscription required
G&A costs $M CAD 205
Total OpEx $M CAD  ......  Subscription required
Total Taxes $M CAD  ......  Subscription required
Royalty payments $M CAD  ......  Subscription required
Gross revenue (LOM) $M CAD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M CAD  ......  Subscription required
After-tax Cash Flow (LOM) $M CAD  ......  Subscription required
Pre-tax NPV @ 5% $M CAD  ......  Subscription required
Pre-tax NPV @ 8% $M CAD  ......  Subscription required
After-tax NPV @ 5% $M CAD  ......  Subscription required
After-tax NPV @ 8% $M CAD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
After-tax IRR, %  ......  Subscription required
Pre-tax payback period, years  ......  Subscription required
After-tax payback period, years  ......  Subscription required
Subscription required - Subscription is required.

Proposed Heavy Mobile Equipment as of December 31, 2016:
HME TypeSizeQuantity
Backhoe 117 HP 1
....................... Subscription required ....................... Subscription required 1
....................... Subscription required ....................... Subscription required 9
....................... Subscription required ....................... Subscription required 2
....................... Subscription required 9
....................... Subscription required ....................... Subscription required 3
....................... Subscription required ....................... Subscription required 2
....................... Subscription required 5
....................... Subscription required ....................... Subscription required 2
....................... Subscription required ....................... Subscription required 2
....................... Subscription required ....................... Subscription required 2
....................... Subscription required ....................... Subscription required 2
....................... Subscription required ....................... Subscription required 1
....................... Subscription required ....................... Subscription required 30
....................... Subscription required 7
....................... Subscription required ....................... Subscription required 1
....................... Subscription required ....................... Subscription required 1
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 28, 2020
....................... Subscription required ....................... Subscription required Subscription required May 28, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Year-end Mineral Reserves 2017
Technical Report 2016
Subscription required - Subscription is required.

News:

NewsDate
Premier Reports Optimized Positive Feasibility Study for Hardrock December 16, 2020
Orion to Acquire Centerra Gold's 50% Interest in the Greenstone Gold Mines Partnership December 15, 2020
Premier Reports Approval of Schedule 2 Amendment for Hardrock July 9, 2020
Premier Announces US$205M Offer to Acquire Centerra's Interest in Greenstone Gold Mines Partnership March 30, 2020
Premier Gold Confirms Updated Mineral Resource Estimate at Hardrock October 3, 2019
Centerra Gold and Premier Gold Mines Report that Greenstone Gold Mines Received Provincial Government Approval of the Hardrock Project Environmental Assessment March 28, 2019
Premier Gold Mines Announces Federal Government Approval of the Hardrock Project Environmental Assessment December 17, 2018

Subscription required - Subscription is required.

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