• 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
A1 Mine

This page is not tailored to
devices with screen width under 750 px.
 Location:
110 km NE from Melbourne, Victoria, Australia

  Address:
A1 Gold Mine Woods Point Road
Mansfield
Victoria, Australia
3722
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
  • 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

StageProduction
Mine TypeUnderground
Commodities
  • Gold
Mining Method
  • Airleg stoping
Production Start...


Owners

Source: p. 51
CompanyInterestOwnership
Kaiser Reef Ltd. 100 % Indirect
On 28 January 2021, Kaiser Reef Limited completed the acquisition of operating gold mining assets and a processing facility owned by Centennial Mining Ltd (previously subject to Deed of Company Arrangement). The assets acquired are located in the Victorian Goldfields.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Breccia pipe / Stockwork
  • Vein / narrow vein


Summary:

The project area lies within the Woods Point Walhalla Synclinorium structural domain of the Melbourne Zone, a northwest trending belt of tightly folded Early Devonian Walhalla Group sandy turbidites. The domain is bounded by the Enoch’s Point and Howe’s Creek Faults, both possible detachment-related splay structures that may have controlled the intrusion of the Woods Point Dyke Swarm and provided the conduits for gold bearing hydrothermal fluids.

The A1 deposit in general is characterised by narrow, very high-grade gold veins that are exploited using airleg stope mining within an extensive intrusive diorite. The Queens Lode is a large high-grade unmined part of the larger A1 gold mine system that is quite distinct from the typical ore mined historically, and still, at A1.

Most gold mineralisation in the Woods Point to Gaffney’s Creek corridor occurs as structurally controlled shear-zone hosted dilational breccias and stringer quartz vein systems hosted by dioritic dyke bulges. The A1 Mine is central to this corridor, with gold mineralisation contained within the steeply dipping main southern diorite dyke bulge and a smaller northern diorite dyke. The dyke is cut and offset by a series of mainly reverse faults which host most of the gold mineralisation.

Gold is associated with intense quartz-ankerite-muscovite-sulphide wall rock alteration around dilational breccia veins with branching quartz-sulphidic stringer veins or narrow veins within reve ........


Mining Methods

  • Airleg stoping


Summary:

The A1 Mine is currently undergoing a ramp up plan prepared by the Group that is designed to access increased production sources from airleg and mechanical mining methods.

Current ore extraction is through air-leg mining methods. The ore is then treated at the Group’s wholly owned CIL processing facility at Maldon. Production during the period was constrained while upgrades to mine power and ventilation infrastructure were implemented and new production fronts were developed.

The A1 Mine operation commenced its decline heading to the Queens Lode in the final quarter which opened access to the 19 Intermediate Level (“19INT”) is the first new level and ore to be accessed in several years. It provides growing confidence that the operations will continue to deliver high-grade ore to Kaiser’s processing plant at Maldon, where ramp-up planning and staffing has also commenced in anticipation of increased production.

The Group has developed a strategy to ramp up production in the short and medium term, targeting an advanced exploration target called the Queens Lode. The Queens Lode is anticipated to allow mechanised mining to increase the production rate overall. The Queens Lode is currently the subject of a resource delineation drilling programme.


Crushing and Grinding
Source: Subscription required

- subscription is required.


Processing

Source: Subscription required

Summary:

- subscription is required.


Production:
During the 5 month period under the Kaiser Reef Limited’s ownership, the A1 Mine produced 2,178 ounces.

CommodityUnits202220202017
Gold oz  ......  Subscription required  ......  Subscription required15,840
All production numbers are expressed as metal in doré.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220202017
Tonnes processed  ......  Subscription required  ......  Subscription required
Ore tonnes mined  ......  Subscription required  ......  Subscription required84 kt
Subscription required - Subscription is required.

Reserves at October 1, 2018:
The Mineral Resource has been quoted at a 3 g/t cut-off grade for the CSA model component (above 1400mRL and below 1260mRL) and 2.5 g/t Au for the updated model used between the 1260mRL and 1400mRL.

CategoryTonnage CommodityGradeContained Metal
Indicated 208,602 t Gold 5.3 ppm 36 koz
Inferred 1,051,475 t Gold 6.29 ppm 213 koz
Total Resource 1,260,077 t Gold 6.13 ppm 249 koz

Financials:

Units20222017
Revenue M  ......  Subscription required 26  USD
Gross profit M  ......  Subscription required
Pre-tax Income M  ......  Subscription required
After-tax Income M  ......  Subscription required
EBIT M  ......  Subscription required
EBITDA M  ......  Subscription required
Operating Cash Flow M  ......  Subscription required
Subscription required - Subscription is required



Heavy Mobile Equipment as of April 21, 2021:
HME TypeModelQuantity
Drill ....................... Subscription required
Drill jumbo (two boom) ....................... Subscription required
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 19, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 19, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 19, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Quarterly Report 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
Press Release 2018
Annual Report 2017
Corporate Presentation 2017
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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