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Canada
Aley Project

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 Location:
121 km W from Wonowon, British Columbia, Canada

  Project Contacts:
15th Floor, 1040 West Georgia St.
Vancouver
British Columbia, Canada
V6E 4H1
Phone  ...  Subscription required
Fax778-373-4534
WebsiteWeb
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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
  • Niobium
Mining Method
  • Truck & Shovel / Loader
Processing
  • Flotation
  • Agitated tank (VAT) leaching
  • Magnetic separation
Mine Life24 years (as of Jan 1, 2014)


Owners

Source: p. 6
CompanyInterestOwnership
Taseko Mines Ltd. 100 % Indirect
Aley Corporation Ltd. 100 % Direct
The Aley Property is 100% owned by Aley Corporation which is a wholly-owned subsidiary of Taseko Mines.

Deposit Type

  • Magmatic


Summary:

The Aley Carbonatite complex intrudes Cambrian to Ordovician sedimentary rocks of the Kechika (limestone), Skoki (dolomite to volcaniclastics) and Road River Group formations (clastic sedimentary rocks). The intrusion is ovoid in plan view with a diameter of approximately 2 km and surrounded by a fenite aureole up to 500 m thick that has previously been mapped as “amphibolite” (Pride, Cominco Ltd. , 1987) and “syenite” (Mäder, 1986). The intrusive contacts are parallel to bedding and lie at a uniform stratigraphic level near the base of the Kechika Formation. Three principal units within the carbonatite have been identified:

1) a volumetrically dominant fersmite- and pyrite-bearing dolomite-apatite carbonatite unit that forms the core of the sill;

2) a magnetite, pyrochlore, phlogopitebearing calcite-apatite carbonatite unit that forms the margins of the sill where it is in contact with the Kechika Formation;

3) a banded magnetite-apatite unit in the dolomite core.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The mining method planned is a conventional open pit with equipment sized and fleet requirements determined to meet the required production rate. The mining fleet required for the mine schedule detailed in this report includes (1) 15m3 bucket size diesel hydraulic shovel, (1) 14m3 bucket sized wheel loader, (1) rotary blast holedrill with 200mm bit size, (7) 91 tonne payload rigid frame haul trucks, plus ancillary and service equipment to support operations.

The detailed pit design is based on the LG pit shell identified in the sensitivity analysis. It is designed to conform to recommended pit slopes, takes into account equipment size and limits the vertical advance to 8 benches per year. The designed pit is subdivided into 2 phases, the first phase mining down the east ridge, the second phase mining the west and north ridges and down to the bottom of the pit. Using the 2 pit phases, a 24 year production schedule has been developed. For the final 4 years of the mill production under this plan, mining will have been completed from the pit and all mill feed will be from the stockpile.

The mine plan and production schedule were developed for a 10,000 tonne per day mill feed operation and results in a life of mine strip waste:ore ratio of 0.5 to 1.


Crushing and Grinding


Processing

  • Flotation
  • Agitated tank (VAT) leaching
  • Magnetic separation

Source: Subscription required

Summary:

The plant site location is approximately 2-3 km east of the pit location on a flat plateau.  Ore will be hauled from the pit location to a primary crusher located proximate to the concentrator.  Crushed ore is to be delivered to a live 10 thousand tonne capacity mill feed stockpile.   

The concentrator will consist of a crushing/grinding circuit to produce a 50um product for further treatment. The 50um product will undergo magnetic separation to remove magnetite, followed by pyrite flotation to remove the pyrite. The pyrite tails will be fed to a multistage niobium flotation circuit to produce final niobium concentrate.  The magnetite and pyrite will be combined with the niobium flotation waste tails and will be sent to the TSF embankment, located 2500m southeast (and down gradient) of the plant site location, by gravity. The niobium flotation stage will produce approximately 100 tonnes of niobium concentrate per day and the concentrate will be leached with acid and sodium h ........

Recoveries & Grades:

CommodityParameterAvg. LOM
Niobium Head Grade, % 0.5
Niobium Recovery Rate, %  ......  Subscription required
Subscription required - Subscription is required.

Projected Production:

CommodityProductUnitsAvg. AnnualLOM
Niobium Nb t 187,600
Niobium Ferro-niobium t 9,000297,500

Operational Metrics:

Metrics
Stripping / waste ratio 0.5 *
Daily milling capacity 10 kt *
Waste tonnes, LOM 34,132 kt *
Total tonnes mined, LOM 128,145 kt *
Tonnes milled, LOM 83,815 kt *
Annual milling capacity 3,650 kt *
* According to 2014 study.

Reserves at October 30, 2014:

CategoryTonnage CommodityGrade
Proven 44,272 kt Nb2O5 0.52 %
Probable 39,543 kt Nb2O5 0.48 %
Proven & Probable 83,815 kt Nb2O5 0.5 %
Measured 112,651 kt Nb2O5 0.41 %
Indicated 173,169 kt Nb2O5 0.35 %
Measured & Indicated 285,820 kt Nb2O5 0.37 %

Commodity Production Costs:

CommodityUnitsAverage
Total cash costs Niobium USD 24 / kg *
Operating margin Niobium USD 21 / kg *
Assumed price Niobium USD 45 / kg *
* According to 2014 study / presentation.

Operating Costs:

Units2014
OP mining costs ($/t milled) CAD 4.63 *
Processing costs ($/t milled) CAD  ......  Subscription required
Total operating costs ($/t milled) CAD  ......  Subscription required
* According to 2014 study.
Subscription required - Subscription is required.

2014 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M CAD  ......  Subscription required
Sustaining CapEx $M CAD  ......  Subscription required
Total OpEx $M CAD  ......  Subscription required
Total Taxes $M CAD  ......  Subscription required
Gross revenue (LOM) $M CAD  ......  Subscription required
EBITDA (LOM) $M CAD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M CAD  ......  Subscription required
Pre-tax NPV @ 8% $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 October 30, 2014:
HME TypeSizeQuantity
Drill 1
....................... Subscription required ....................... Subscription required 1
....................... Subscription required ....................... Subscription required 1
....................... Subscription required ....................... Subscription required 7
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 22, 2019
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2016
Corporate Presentation 2015
Project Description 2014
Technical Report 2014
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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