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Sweden
Woxna Project

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 Location:
12 km W from Edsbyn, Sweden

  Project Contacts:
Suite 1305, 1090 West Georgia Street
Vancouver
British Columbia, Canada
V6E 3V7
Phone  ...  Subscription required
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StagePreliminary Economic Assessment
Mine TypeOpen Pit
Commodities
  • Graphite
Mining Method
  • Truck & Shovel / Loader
Mine Life19 years (as of Jan 1, 2021)
The PEA utilizes one out of four deposits currently owned by Woxna under granted exploitation concessions, where two of the other deposits also have indicated and inferred mineral resource estimates offering potential upside for further expansion in future development or studies.

The Kringel deposit has already been developed as an existing mine with a partially exploited open pit and is the only deposit used as a basis for the Project in the PEA. A modernized processing plant, tailings storage facility (TSF), office and workshop buildings exist adjacent to the Kringel resource, are fully connected with power and water services, and are currently under care and maintenance.


Owners

Source: p. 19
CompanyInterestOwnership
Leading Edge Materials Corp 100 % Indirect
The ‘Woxna Graphite Project’ is owned by Woxna Graphite AB a 100% owned Swedish subsidiary of international Leading Edge Material Corp.

Contractors

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Deposit Type

  • Metamorphic
  • Contact-metasomatic
  • Hydrothermal


Summary:

The Woxna Graphite Project comprises four exploitation concessions (146.71 ha) over the Kringelgruvan (Kringel), Gropabo, Mattsmyra and Mansberg graphite deposits.

The local geology for all four of the Woxna Graphite deposits has been reported in this technical document in support of the re-estimation of the Woxna Graphite Mineral Resources in totality. However, for the purposes of the PEA, the Kringel graphite deposit local geology is summarised as follows:

• the mineralisation is hosted by a sequence of steeply dipping metasedimentary and metavolcanic units metamorphosed to sillimanite grade and intruded by igneous units ranging from alkali pegmatite to granite;
• the local geology within the exploitation area is dominated by steeply-dipping, calcareous quartz-rich meta-tuff, with interbedded metasedimentary units and cross-cutting pegmatite;
• trace to massive graphite mineralisation in two discrete tabular zones is developed in association with pegmatitic intrusions;
• the mineralisation is tabular in shape, and occurs late in the structural history, postdating and crosscutting any remnant tectonised and metamorphosed lithologies;
• the graphite is considered hydrothermal/metasomatic in nature; and
• the Kringel deposit area has variable cover of 2 m to 15 m of Quaternary age glacial moraine.

Mineralisation - Kringel
Generally, graphite is developed as an accessory mineral as laminated aggregates disper ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The mine design, scheduling and costing for the Woxna Mine was undertaken by independent mining specialist MPlan. The selection of the most appropriate and cost effective method of mining was based on both historical information, the characteristics of the mineralisation and testwork results. A Basis of Design (BoD) was prepared which provides an effective tool to clearly present the 2021 decisions, assumptions and specifications that were used to develop the mining scenario for Kringel deposit at the Woxna Mine.

The Kringel deposit geometry combined with a relatively flat topography favours surface mining methods which was the historical method of mineralisation extraction. Different mining methods were considered, and two approaches were used to rank the mining methods and to evaluate their technical feasibility and relevance, namely the University of British Columbia (UBC) method and the Nicholas method. The top-ranking method proved to be surface mining at the planned mining production rate objective of 160 kt RoM per annum delivered to the primary crusher or RoM pad stockpiles. The reference point at which RoM is defined is at the point where the RoM is delivered to the Woxna Concentrator, i.e. primary crusher or RoM pad stockpiles.

The life of mine (LoM) is 15-years, and the life of project (LoP) is 19-years with the Woxna Concentrator feed from stockpiles in the last few years. A RoM graphite grade of 10.2% C on average over the first 15-years of ........


Crushing and Grinding
Source: Subscription required

- subscription is required.


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityProductUnitsAvg. AnnualLOM
Graphite Mineral in concentrate t 258,152
Graphite CSPG t 6,604
Graphite Micronized fines t 7,479
Graphite Concentrate kt 15

Operational Metrics:

Metrics
Stripping / waste ratio  ......  Subscription required
Waste tonnes, LOM  ......  Subscription required
Ore tonnes mined, LOM  ......  Subscription required
Total tonnes mined, LOM  ......  Subscription required
Tonnes processed, LOM  ......  Subscription required
Annual processing capacity  ......  Subscription required
Annual ore mining rate  ......  Subscription required
Mining scale, tpd  ......  Subscription required
* According to 2021 study.
Subscription required - Subscription is required.

Reserves at June 9, 2021:
The economic analysis in the PEA considers only one of the four graphite deposits held by Woxna Graphite, namely the Kringel deposit for which new Mineral Resource estimates have been disclosed.

4% Cg mill cut-off grade applied for reporting purposes constrained within the MPlan 2021 pitshell.

CategoryTonnage CommodityGrade
Measured 0.96 Mt Graphite 9.21 %
Indicated 1.65 Mt Graphite 9.09 %
Measured & Indicated 2.61 Mt Graphite 9.13 %
Inferred 0.39 Mt Graphite 8.72 %

Commodity Production Costs:

CommodityUnitsAverage
Cash costs Graphite USD  ......  Subscription required&nbs
Assumed price Graphite USD  ......  Subscription required&nbs
* According to 2021 study / presentation.
Subscription required - Subscription is required.

Operating Costs:

Units2021
OP mining costs ($/t milled) USD 22.7 *
Processing costs ($/t milled) USD  ......  Subscription required
G&A ($/t milled) USD  ......  Subscription required
Total operating costs ($/t milled) USD  ......  Subscription required
* According to 2021 study.
Subscription required - Subscription is required.

2021 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M USD  ......  Subscription required
Working capital $M USD  ......  Subscription required
Closure costs $M USD  ......  Subscription required
Total CapEx $M USD  ......  Subscription required
Total OpEx $M USD  ......  Subscription required
Total Taxes $M USD  ......  Subscription required
Gross revenue (LOM) $M USD  ......  Subscription required
EBITDA (LOM) $M USD  ......  Subscription required
Net Income (LOM) $M USD  ......  Subscription required
After-tax Cash Flow (LOM) $M USD  ......  Subscription required
Pre-tax NPV @ 8% $M USD  ......  Subscription required
After-tax NPV @ 8% $M USD  ......  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 June 9, 2021:
HME TypeQuantityLeased or
Contractor
Dozer ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jun 9, 2021
....................... Subscription required ....................... Subscription required Subscription required Jun 9, 2021
....................... Subscription required ....................... Subscription required Subscription required Oct 27, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
Corporate Presentation 2018
Financial Review 2015
Management Discussion & Analysis 2015
Technical Report 2015
Preliminary Economic Assessment 2013
Subscription required - Subscription is required.

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