• 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
United States
Haile UG - Horseshoe Project (Haile Operation)

This page is not tailored to
devices with screen width under 750 px.
 Location:
5,5 km NE from Kershaw, South Carolina, United States

  Project Contacts:
6911 Snowy Owl Road
P.O. Box 128
Kershaw
South Carolina, United States
29067
Phone  ...  Subscription required
EmailEmail
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 United States
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 TypeUnderground
Commodities
  • Gold
Mining Method
  • Transverse open stoping
  • Cemented backfill
Production Start...
Mine Life6 years (as of Jan 1, 2021)
Commenced development September 2022. First Haile UG - Horseshoe ore remains on-track for delivery in Q4 2023.
Latest NewsOceanaGold Mines First Ore from Horseshoe Underground and Provides Haile Operations and Exploration Update     September 14, 2023


Owners

Source: p. 11,26
CompanyInterestOwnership
OceanaGold Corp. 100 % Indirect
OceanaGold Corp. indirectly owns 100% interest in the Haile UG project through it's wholly owned subsidiary Haile Gold Mine Inc.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Sediment-hosted
  • Breccia pipe / Stockwork
  • Vein / narrow vein


Summary:

The Haile district consists of nine gold deposits within a 3.5 km by 1 km area. Haile occurs within a variably deformed ENE-trending structural zone at or near the contact between metamorphosed Neoproterozoic volcanic and sedimentary rocks. Haile is hosted in laminated siltstones and minor volcanic rocks of the Upper Persimmon Fork Formation and is dissected by barren NNW-striking diabase dikes. Deformation includes brittle and ductile styles with ENE-trending foliation, faults, brecciation, and isoclinal folds.

Foliation intensity increases along sedimentary-volcanic contacts and is strongest in the laminated siltstones where gold mineralization is best developed. Gold-pyrite-silica-rich fluids were preferentially precipitated in more permeable and structurally deformed metasediments. Gold mineralization also occurs in intrusive and volcanic rocks adjacent to faults and shear zones.

The Haile gold deposits occur within a 5 km long by 1.5 km wide ENE-trending structural corridor. Northwest-dipping ore zones dip 30 to 500NW and include the Champion, Small, Mill Zone, Chase, Ledbetter, Red Hill and Snake deposits. Both northwest- and southeast-dipping ore zones occur in the Palomino and Horseshoe deposits along the southeast edge of the district. ENE-striking, 40-600NW-dipping faults focus high-grade zones > 3 g/t Au.

Mineralisation and Alteration

Haile gold mineralization occurs as an en-echelon 5 km long by 1.5 km wide cluster of ........


Mining Methods

  • Transverse open stoping
  • Cemented backfill


Summary:

The Haile is currently being mined as an open pit mine. Economic mineralization extends below and outside of the pit extents. Mineralization is concentrated in two main zones based on vertical position which form a “horseshoe” geometry over a vertical distance of 350 m. Both zones strike NE adjacent to the siltstone-dacite contact, however, the upper zone dips about 400NW and the lower zone is nearvertical. The upper zone NW-dipping high-grade lenses of mineralization are focused along beddingparallel foliation with intense silicification. The Horseshoe fault (NE strike, 400NW dip) juxtaposes the hanging wall of upper Horseshoe against barren dacite with a sill-like geometry. This geometry extends southwestward into the nearby Snake pit. The steeply dipping Lower Zone is adjacent to the subvertical contact with barren dacite. This mineralization will be mined as an underground mine and is referred to as Horseshoe.

Based on the orientation, depth, and geotechnical characteristics of the mineralization, a transverse sublevel open stoping method (longhole) with has been selected. The stopes will be 20 m wide and stope length will vary based on mineralization grade and geotechnical considerations. A spacing of 25 m between levels is used. Cemented rock fill (CRF) will be used to backfill the stopes. There will be an opportunity for some non-cemented waste rock to be used in select stopes based on the mining sequence. The CRF will have sufficient strength to allow for ........


Crushing and Grinding
Flow Sheet: Source

A relatively compact Run of Mine (ROM) area is provided for storage and re-handling of ore allowing blending to minimize variation of head grade (sulfur and gold) and rock type, into the crusher. Ore is rehandled into the crusher dump pocket by Front End Loader (FEL).

Ore is reclaimed by an apron feeder onto a vibrating grizzly that delivers scalped oversize to the primary jaw crusher to reduce the ore size from RoM to minus 100 mm. Crushed ore is conveyed for surge and storage of the recombined grizzly undersize fines and primary crushed ore in a coarse ore surge bin or diverted on to an open conical emergency stockpile for later reclaim by Front End Loader (FEL) into a reclaim bin.

Ore is reclaimed from either the surge or reclaim bins, separately or simultaneously, using apron feeders onto a SAG mill feed conveyor belt delivering into the SAG mill feed chute.

Ore is milled in the SAG–Ball Mill-Pebble Crusher (SABC) circuit. The SAG mill operates in closed circuit with a vibrating discharge screen and a pebble return circuit incorporating a surge bin and Sandvik CH-440 cone crusher. The ball mill operates in closed circuit with hydrocyclones to produce the desired grinding product size of 75 microns.

Selected flotation reagents are added in the grinding circuit. A portion of the grinding circuit ball mill circulating load is treated in a flash flotation cell with the concentrate going to the regrind circuit. The grinding circuit product passes to a bank of bulk rougher flotation cells to recover the balance of the sulfide mineralization. Thereafter, the combined flash and rougher flotation concentrates are reground in a two-stage circuit utilizing an ETM-1500 tower mill in closed circuit with cyclones to a P80 under 40 microns and then followed by an M10000 Isamill in closed circuit with cyclones to a target P80 of 13 microns.


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityUnitsLOM
Gold koz 418
All production numbers are expressed as metal in ore.

Operational Metrics:

Metrics
Daily ore mining rate  ......  Subscription required
Waste tonnes, LOM  ......  Subscription required
Ore tonnes mined, LOM  ......  Subscription required
Total tonnes mined, LOM  ......  Subscription required
* According to 2021 study.
Subscription required - Subscription is required.

Reserves at December 31, 2022:
For Haile Underground (Horseshoe) reserves, the cut-off is 1.72 g/t Au, with adjacent lower grade stopes included in the reserves based on an incremental stope cut-off grade of 1.56 g/t Au.

For Haile Underground Resources at a 1.37 g/t Au cut-off.

CategoryTonnage CommodityGradeContained Metal
Probable 3.4 Mt Gold 3.91 g/t 0.42 M oz
Indicated 7 Mt Gold 3.97 g/t 0.9 M oz
Inferred 4.8 Mt Gold 3.9 g/t 0.6 M oz

Commodity Production Costs:

CommodityUnitsAverageAverage
Assumed price Gold USD  ......  Subscription required
* According to 2021 study / presentation.
Subscription required - Subscription is required.

Operating Costs:

Units2021
UG mining costs ($/t mined) USD 48.7 *  
* According to 2021 study.

2021 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Equipment leasing costs $M USD  ......  Subscription required
Total CapEx $M USD  ......  Subscription required
UG OpEx $M USD  ......  Subscription required
Backfill costs $M USD  ......  Subscription required
Subscription required - Subscription is required.


Proposed Heavy Mobile Equipment as of December 31, 2021:
HME TypeModelQuantityLeased or
Contractor
Bolter ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Dec 31, 2021
....................... Subscription required ....................... Subscription required Subscription required Dec 31, 2021
....................... Subscription required ....................... Subscription required Subscription required Dec 31, 2021
....................... Subscription required ....................... Subscription required Subscription required Dec 31, 2021
....................... Subscription required ....................... Subscription required Subscription required Apr 7, 2023
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
Annual Information Form 2022
Corporate Presentation 2022
Management Discussion & Analysis 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Information Form 2018
Year-end Mineral Reserves 2018
Feasibility Study Report 2017
Press Release 2016
Feasibility Study Report 2015
Subscription required - Subscription is required.

News:

NewsDate
OceanaGold Mines First Ore from Horseshoe Underground and Provides Haile Operations and Exploration Update September 14, 2023
OceanaGold Reports Second Quarter 2023 Operating and Financial Results August 1, 2023

Subscription required - Subscription is required.

Terms of Use Privacy Policy © 2017-2023 MDO Data Online Inc.