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Canada
Lac Gueret (Uatnan) Project

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 Location:
196 km NW from Port-Cartier, Quebec, Canada

  Project Contacts:
3030 Le Carrefour blvd., Suite 600
Laval
Quebec, Canada
H7T 2P5
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Graphite
Mining Method
  • Truck & Shovel / Loader
Mine Life25 years (as of Jan 1, 2018)
Until the quarter ended March 31, 2020, Mason Graphite was engaged in the development of its 100% owned Lac Guéret graphite property located in Québec, Canada. Substantially, all of the Company's efforts were devoted to financing and developing this property. The Company has a National Instrument 43-101 compliant technical report for its mineral reserve and resource estimate and for a feasibility study on the Lac Guéret property.

On May 15, 2022, Nouveau Monde Graphite Inc. concluded an investment to explore the potential development of the Lac Guéret graphite property (now the Uatnan Property).
Latest NewsNMG Issues Positive Results of its Preliminary Economic Assessment for the Uatnan Mining Project – One of the World’s Largest Graphite Projects in Development with Indicative NPV in Excess of C$2 Billion     January 10, 2023


Owners

Source: p. 71
CompanyInterestOwnership
Mason Graphite Inc. 100 % Direct
The Lac Guéret property covers an area of 8,570 hectares, all of which are 100% in the interest of Mason Graphite with the claims (162 claims) in good standing until July 17, 2019.

Contractors

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Deposit Type

  • Hybrid


Summary:

The regional geology includes the most southwesterly of several elongate anticlinoria of Gagnon Group metasediments that include the traditional iron formation stratigraphy of the Wabush-MontReed iron district. These units are metamorphosed equivalents of the Labrador Trough (New Québec Orogen) sediments that occur around Schefferville, Québec and north. The southwest Manicouagan Anticlinorium shows a core of Denault Formation (Fm) dolomitic marble which lies beneath the Sokoman iron formation level, deposited on a platform of Katsao Fm pelitic metasediments. The Sokoman Fm (iron chemical sediments) overly the Denault Fm. Quartz-rich non/low oxide, iron-oxide, and silicate facies of the Sokoman Fm form infolded synclines and anticlines. The Sokoman Fm quartzite non-oxide facies overlies the iron oxide-bearing facies. The top of the Sokoman Fm has a diachronous, transitional contact with the overlying Menihek Fm pelitic sediments.

Graphitic metasediments are concentrated in the Lac Guéret Member above the Sokoman Fm iron deposits. Graphite also occurs in minor amounts in the adjoining Sokoman Fm near the contact, but most of the potentially economic graphite lies within the Member. This relationship is common in the district with examples at Lac Knife (QC) and the Mart Lake graphite showing at the Kami iron deposit (Labrador City, NL). Graphite formed as beds within clastic sedimentary basinal deposition under anoxic conditions that preserved the organic carbon and ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The mining method selected for the Project is a conventional open pit, truck and shovel, drill and blast operation. Vegetation, topsoil and overburden will be stripped and stockpiled for future reclamation use. The ore and waste rock will be mined with 10 m high benches, drilled, blasted and loaded into articulated haul trucks with a hydraulic excavator.

The mine will be operated by a 100% owner-operated fleet, seven days per week and ten hours per day. The operations will run for ten months of the year with a two-month shutdown from April to May during the spring thaw season; if required mining operations will be conducted during the spring season.

The ore will be hauled to the run of mine (ROM) pad located within one km of the pit and dumped directly into the hopper of the primary crusher. The ore will then be discharged by a conveyor belt into the crushed ore stockpile. A front end wheel loader will load the ore haulage trucks which will transport the ore from the mine site to the plant site in Baie-Comeau. The transportation of the ore from the mine to Baie-Comeau will be done during the ten-month period, seven days per week; if required, transport during the thaw period will be possible but at reduced truck capacity.

The overburden and waste rock that will be mined during the 25-year operation will be placed in three stockpiles (one for overburden and two for waste rock). The piles will be located to the southeast of the open pit, outside ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Projected Production:

CommodityUnitsAvg. AnnualLOM
Graphite kt 521,297
All production numbers are expressed as concentrate.

Operational Metrics:

Metrics
Stripping / waste ratio 0.8 *
Waste tonnes, LOM 3,870 kt *
Ore tonnes mined, LOM 4,741 kt *
Total tonnes mined, LOM 8,611 kt *
Annual processing rate 189,620 t *
Annual ore mining rate 190,000 t *
* According to 2018 study.

Reserves at December 5, 2018:
The Mineral Reserves cut-off grade is 6% Cg.
The Mineral Resources of the Lac Guéret deposit were validated in 2018 by GMG and re-estimated with the updated economical parameters and using a cut-off grade of 5.75% Cg as a base case scenario and a fixed specific gravity of 2.9 t/m3 to convert volume into tonnage.

CategoryTonnage CommodityGradeContained Graphite
Proven 2,003,000 t Graphite 25.1 % 502,000 t
Probable 2,738,000 t Graphite 29.8 % 815,000 t
Proven & Probable 4,741,000 t Graphite 27.8 % 1,317,000 t
Measured 19,021,000 t Graphite 17.9 % 3,404,000 t
Indicated 46,519,000 t Graphite 16.9 % 7,862,000 t
Measured & Indicated 65,540,000 t Graphite 17.2 % 11,266,000 t
Inferred 17,613,000 t Graphite 17.3 % 3,404,000 t

Commodity Production Costs:

CommodityUnitsAverage
Cash costs Graphite CAD 483.77 / t *  
Assumed price Graphite CAD 1,933 / t *  
* According to 2018 study / presentation.

2018 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M CAD  ......  Subscription required
Sustaining CapEx $M CAD  ......  Subscription required
Total CapEx $M CAD  ......  Subscription required
OP OpEx $M CAD  ......  Subscription required
Processing OpEx $M CAD 308.9
Transportation (haulage) costs $M CAD 187.3
G&A costs $M CAD 61.8
Total OpEx $M CAD  ......  Subscription required
Mining Taxes $M CAD  ......  Subscription required
Total Taxes $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 @ 10% $M CAD  ......  Subscription required
Pre-tax NPV @ 8% $M CAD  ......  Subscription required
After-tax NPV @ 10% $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 11, 2018:
HME TypeModelSizeQuantity
Drill (blasthole) ....................... Subscription required 114 mm ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNamePhoneEmailProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Dec 11, 2018
....................... Subscription required ....................... Subscription required Subscription required Dec 11, 2018
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Oct 26, 2022
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2018

Corporate Filings & Presentations:

DocumentYear
Feasibility Study Report 2018
Press Release 2018
Feasibility Study Report 2016
Subscription required - Subscription is required.

News:

NewsDate
NMG Issues Positive Results of its Preliminary Economic Assessment for the Uatnan Mining Project – One of the World’s Largest Graphite Projects in Development with Indicative NPV in Excess of C$2 Billion January 10, 2023

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