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United States
Coosa Project

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 Location:
61 km N from Montgomery, Alabama, United States

  Project Contacts:
6950 South Potomac Street, Suite 300
Centennial
Colorado, United States
80112
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  • Overview
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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Graphite
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life27 years (as of Jan 1, 2015)
The Coosa graphite deposit and Kellyton graphite processing plant (currently under construction) together will represent the first fully integrated domestic battery-grade graphite project in the U.S.


Owners

Source: p. 19
CompanyInterestOwnership
Westwater Resources Inc. 100 % Indirect
On April 23, 2018, Westwater acquired a 100% interest in Alabama Graphite Corp. as part of a strategic decision to refocus the Company to supply battery manufacturers with low-cost, high-quality, and high-margin natural graphite products. As a result of that business transaction, Westwater became the owner of the Project.

Contractors

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Deposit Type

  • Metamorphic hosted


Summary:

Graphite deposits occur in three forms: flake graphite, vein graphite, and amorphous graphite.

Landis (1971) tentatively concluded that graphite formation is primarily dependent on metamorphic temperature and forms above 400°C, with pressure and variation in starting material constituting secondary controls.

The Coosa graphite deposits are flake graphite deposits in high grade metamorphic rocks. They are associated with anomalous vanadium, including the vanadium-mica roscoellite, and nickel, as well as other elements.

Geological mapping of the Coosa resource grid was carried out by Alabama Graphite geologists based on stream sections, road cuts, drill pads, and trenches. The main graphite schist trends northeast and to the south changes to north-south, and joins with another unit of graphite schist to the east. There is garnet schist on the east side of the graphite schist, which dies out to the south. These features may be interpreted as an anticline plunging at a low angle to the south with a core of garnet schist overlain structurally by graphite schist. The graphite schist is underlain structurally on the west side by quartz-muscovite-biotite-graphite schist.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Open pit mining was selected as the mining method to examine the Coosa deposit based on the decision to restrict mining to the shallow oxidized horizon as well as the very low strip ratio of the deposit. As there is very little waste rock, and mining would not occur in competent rock, underground bulk mining was not considered to be a practical mining method for this deposit.

Due to the decision to only mine the oxidized mill feed initially, all waste and overburden material was to be hauled outside of potential mining areas. Therefore, no backfilling of pits was to be planned for so that future potential mining below the oxidized horizon could be preserved.

Pit designs were generally very shallow with depths up to approximately 100 feet. Four starter phases were identified in the northern area of the project, followed by six small lower grade pits to the south. Some mining areas were standalone pits and while others were pushbacks of other phases.

Mining will not include blasting, so a simple, small conventional loading and hauling fleet will be used. It will consist of loading with a 6.0 cubic yard excavator in the pit and 45 ton articulated trucks. Assistance to the excavator will be with a 400+ horsepower dozer to loosen and push material to the excavator for loading. Additional support to the mine and plant will be provided by graders and smaller dozers to dress roads and waste/overburden storage facilities.

Three different s ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Projected Production:

CommodityUnitsAvg. AnnualLOM
Graphite tons 16,500377,761
All production numbers are expressed as refined graphite.

Operational Metrics:

Metrics
Stripping / waste ratio 0.11 *
Daily milling capacity 514 tons
Waste tonnes, LOM 1,742,363 tons *
Ore tonnes mined, LOM 15,200,409 tons *
Total tonnes mined, LOM 16,942,772 tons *
Tonnes milled, LOM 15,200,409 tons *
* According to 2015 study.

Reserves at November 30, 2022:
Mineral Resources are constrained within a Whittle pit shell using a cut-off grade of 1.98% Cg.

CategoryTonnage CommodityGradeContained Graphite
Indicated 26 M tons Graphite 2.89 % 754 k tons
Inferred 97 M tons Graphite 3.08 % 2,998 k tons

Commodity Production Costs:

CommodityUnits
Cash costs Graphite USD 746 / ton *  USD
Total cash costs Graphite USD 1,410 / ton *  USD
Assumed price Graphite USD 8,165 / ton *  USD
* According to 2015 study / presentation.
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2015 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Pre-Production capital costs $M USD  ......  Subscription required
Sustaining CapEx $M USD  ......  Subscription required
Total CapEx $M USD  ......  Subscription required
OP OpEx $M USD  ......  Subscription required
Processing OpEx $M USD 136
Refining costs $M USD  ......  Subscription required
G&A costs $M USD 31.8
Total OpEx $M USD  ......  Subscription required
Total Taxes $M USD  ......  Subscription required
Royalty payments $M USD  ......  Subscription required
Gross revenue (LOM) $M USD  ......  Subscription required
Net revenue (LOM) $M USD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M USD  ......  Subscription required
After-tax Cash Flow (LOM) $M USD  ......  Subscription required
Pre-tax NPV @ 0% $M USD  ......  Subscription required
Pre-tax NPV @ 10% $M USD  ......  Subscription required
Pre-tax NPV @ 8% $M USD  ......  Subscription required
After-tax NPV @ 0% $M USD  ......  Subscription required
After-tax NPV @ 10% $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
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Water Supply

Process water is stored in a 200 m3 tank and is distributed to the plant by a process water pump. Plant hosing/flushing water is provided by the hose-down water supply pumps.

The process water tank is also used to feed the diesel powered fire water pump from a separate (lower) offtake, thus guaranteeing availability.

Clean water is piped into the plant from wells and stored in the plant clean water tank. From the storage tank, water is pumped around the plant for use as reagent mixing water, slurry pump gland seal water, and as required for mill lubrication system cooling.

Approximately 90,000 gal/d of fresh water will be required to satisfy water demand for the process plant. This will come from water collection in the settling pond below the dry stack tailings management facility as well as from a series of water wells.


Proposed Heavy Mobile Equipment as of November 27, 2015:
HME TypeSizeQuantity
Backhoe 6 cu. yd ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required
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....................... 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 TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 29, 2023
....................... Subscription required ....................... Subscription required Subscription required Jan 29, 2023
....................... Subscription required ....................... Subscription required Subscription required Jan 29, 2023
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
Corporate Presentation 2022
Other 2022
................................... Subscription required 2020
Preliminary Economic Assessment 2015
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