• 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
Woodlawn Mine

This page is not tailored to
devices with screen width under 750 px.
 Location:
49 km NE from Canberra, New South Wales, Australia

  Project Contacts:
234 Railway Parade
West Leederville
Western Australia, Australia
6007
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 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

StageRestarting
Mine TypeUnderground
Commodities
  • Zinc
  • Copper
  • Lead
  • Gold
  • Silver
Mining Method
  • Longhole stoping
  • Transverse open stoping
  • Longitudinal stoping
  • Cemented backfill
  • Paste backfill
Mine Life7 years (as of Jan 1, 2023)
Woodlawn underground mine and new processing plant/site infrastructure are currently under care and maintenance (since March 2020).

In 2022, Develop Global Ltd. acquired the Woodlawn copper-zinc project. The project is currently at a restart phase.

The Woodlawn mine plan update, released on September 12, 2023 and further amended on September 27, 2023, was based on a 7.2Mt of the Mineral Resource, a 5.1Mt mineral inventory of which the Reserves were 66% or 3.4Mt of the inventory, didn’t include the substantial increase in Resource in the October 2023 estimate. The updated Woodlawn Mineral Resource Estimate of 10.3Mt will feed into the final mine plan used for the Final Investment Decision on the restart of production, in March quarter 2024.

Pre-production activities will continue to de-risk the project even further. Capital development and production fronts are now decoupled with decline development ~200 vertical meters ahead of the production levels.
Latest NewsDevelop Global Ltd.: Woodlawn Resource increases by 40%, paving way for +10-year mine life     October 11, 2023


Owners

Source: p. 8
CompanyInterestOwnership
DEVELOP Global Ltd. 100 % Indirect
The Woodlawn Project is 100% owned by Develop through its subsidiaries Tarago Operations Pty Ltd, Tarago Exploration Pty Ltd and Ochre Resources Pty Ltd. The Project comprises one mining lease and ten exploration licences.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Tailings
  • Vein / narrow vein
  • VMS


Summary:

The Woodlawn deposit is a stratiform volcanogenic massive sulphide (VMS) deposit that is hosted within the central part of the mid Silurian to early Devonian Goulburn Basin: a deep water, back-arc basin which developed within Ordovician to early Silurian sediments of the Lachlan Fold Belt that hosts numerous metalliferous deposits. Woodlawn lies on the eastern limb of the asymmetric north-northwest plunging Woodlawn Syncline.

Base metal (zinc, lead, copper) and precious (silver, gold) mineralisation is hosted within regionally metamorphosed (greenschist facies) fine- to coarse-grained felsic to intermediate volcanic rocks, volcanogenic sedimentary rocks and minor carbonaceous shale, known as the Woodlawn Volcanics.

The Woodlawn deposit comprises three mineralised horizons (Lower, Middle and Upper) hosting 13 known massive sulphide lenses within a 400 m × 600 m wide and 950 m deep northwest plunging corridor which remains open at depth. Across-strike widths vary from 1 m to <35 m.

The updated and new domains occur within the Lower, Middle and Upper horizons. New domains were assigned to Lower, Middle and Upper horizons based on spatial orientation and proximity to known lenses. Updated domains comprised massive sulphide and stringer mineralisation extensions laterally or down plunge within B,C, D, J, H and I lenses.

Exploration drilling by Develop targeting extensions to the north of existing corridor has resulted in the discovery a ........


Mining Methods

  • Longhole stoping
  • Transverse open stoping
  • Longitudinal stoping
  • Cemented backfill
  • Paste backfill


Summary:

Woodlawn underground mine is currently at a restart phase having been on care and maintenance since March 2020.

Optimisations have been completed by Develop Global to generate a detailed mine design and schedule. The mining method selected is longhole stoping with backfill using paste fill as the main method for backfilling with some requirements for cemented rockfill (CRF) and rockfill in the lower levels of Kate Lens during start-up re-commissioning of the pastefill system. Stope access and extraction is a combination of longitudinal and transverse orientation. Stoping is primarily top-down but some instances of bottom-up sequencing exist.

The majority of the mine development is planned to access stopes as end on and retreat stoping to abutments, the exception to this is the Kate lens where central access drives have been designed where stoping will be mined to a retreating pillar.

Ore is scheduled from a combination of new and remnant areas. The ore will be truck to surface then transferred 2.1km overland to the processing plant.

Significant changes in decline strategy from previous studies is incorporated into the current mine plan planning. Scheduling of the mine plan capital development and production areas are now decoupled with decline development ~200 vertical metres ahead of the stoping front. Decline path has been adjusted away from remnant areas and access the historic workings will be from new development.

Th ........


Crushing and Grinding
Source: Subscription required


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:
Production from July 1, 2019, during the 9 months preceding the suspension of operations. On 25 March 2020, Heron announced the suspension of operations at Woodlawn, only 5 months after the sale of the first concentrate produced from the new process plant.

CommodityProductUnits2020LOM
Zinc Payable metal M lbs 351
Copper Payable metal M lbs  ......  Subscription required
Silver Payable metal koz  ......  Subscription required
Zinc Concentrate kt  ......  Subscription required
Copper Concentrate kt  ......  Subscription required
Lead Concentrate kt  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics2020
Annual processing capacity  ......  Subscription required
Ore tonnes mined, LOM  ......  Subscription required
Tonnes processed, LOM  ......  Subscription required
Ore tonnes mined  ......  Subscription required75.5 kt
Tonnes processed  ......  Subscription required890.9 kt
* According to 2023 study.
Subscription required - Subscription is required.

Reserves at October 11, 2023:
No change in the Ore Reserves estimation at Woodlawn project since August 2, 2022.

Woodlawn underground Zinc-Copper Mineral Resource, at NSR cut-off of A$100/t, with A$140/t used for remnant lenses.

CategoryOreTypeTonnage CommodityGradeContained Metal
Probable In-Situ (UG) 3.4 Mt Zinc 3.8 % 131 kt
Probable In-Situ (UG) 3.4 Mt Copper 1.6 % 54 kt
Probable In-Situ (UG) 3.4 Mt Lead 1.3 % 44 kt
Probable In-Situ (UG) 3.4 Mt Gold 0.5 g/t 60 koz
Probable In-Situ (UG) 3.4 Mt Silver 31.7 g/t 3,462 koz
Measured In-Situ (UG) 1,311 kt Zinc 5.3 %
Measured In-Situ (UG) 1,311 kt Copper 2.3 %
Measured In-Situ (UG) 1,311 kt Lead 1.6 %
Measured In-Situ (UG) 1,311 kt Gold 0.9 g/t
Measured In-Situ (UG) 1,311 kt Silver 48.5 g/t
Indicated In-Situ (UG) 5,918 kt Zinc 4.9 %
Indicated In-Situ (UG) 5,918 kt Lead 1.7 %
Indicated In-Situ (UG) 5,918 kt Gold 0.4 g/t
Indicated In-Situ (UG) 5,918 kt Silver 34.6 g/t
Inferred In-Situ (UG) 3,045 kt Zinc 8.7 %
Inferred In-Situ (UG) 3,045 kt Copper 1.6 %
Inferred In-Situ (UG) 3,045 kt Lead 3.4 %
Inferred In-Situ (UG) 3,045 kt Gold 0.5 g/t
Inferred In-Situ (UG) 3,045 kt Silver 71 g/t
Total Resource In-Situ (UG) 10,273 kt Zinc 6.1 %
Total Resource In-Situ (UG) 10,273 kt Copper 1.8 %
Total Resource In-Situ (UG) 10,273 kt Lead 2.2 %
Total Resource In-Situ (UG) 10,273 kt Gold 0.5 g/t
Total Resource In-Situ (UG) 10,273 kt Silver 47.2 g/t

Commodity Production Costs:

CommodityUnitsAverage
All-in sustaining costs (sold) Copper USD  ......  Subscription required
Assumed price Zinc USD  ......  Subscription required
Assumed price Silver USD  ......  Subscription required
* According to 2023 study / presentation.
Subscription required - Subscription is required.

2023 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Pre-Production capital costs $M AUD  ......  Subscription required
Sustaining CapEx $M AUD  ......  Subscription required
Total OpEx $M AUD  ......  Subscription required
Gross revenue (LOM) $M AUD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M AUD  ......  Subscription required
Pre-tax NPV @ 7% $M AUD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
Pre-tax payback period, years  ......  Subscription required
Subscription required - Subscription is required.

Water Supply
Source: Subscription required

- subscription is required.


Proposed Heavy Mobile Equipment as of July 19, 2016:
HME TypeSizeQuantityLeased or
Contractor
Drill 89 mm ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
....................... 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 Nov 6, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 6, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 6, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 6, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 6, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 6, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 6, 2023
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
Mine Operations Plan 2023
Other 2023
Press Release 2023
Quarterly Report 2023
Corporate Presentation 2022
Financial Review 2022
Press Release 2022
Press Release 2022
................................... Subscription required 2020
................................... Subscription required 2019
Other 2018
Feasibility Study Report 2016
Subscription required - Subscription is required.

News:

NewsDate
Develop Global Ltd.: Woodlawn Resource increases by 40%, paving way for +10-year mine life October 11, 2023

Subscription required - Subscription is required.

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