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Canada
Redmond Mine

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 Location:
15 km S from Schefferville, Newfoundland and Labrador, Canada

  Address:
WebsiteWeb
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Overview

StatusClosing / Closed
Mine TypeOpen Pit
Commodities
  • Iron Ore
Mining Method
  • Truck & Shovel / Loader
Mine Life2 years (as of Jan 1, 2013)
Mining at Redmond commenced in July 2013 and a total of 205,000 tonnes of ore were mined during the 2013 operating season. No mining operations were undertaken in 2014.


Owners

Source: p. 21
CompanyInterestOwnership
Labrador Iron Mines Holdings Ltd. 100 % Indirect

Contractors

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Deposit Type

  • Banded iron formation


Summary:

The Labrador Trough contains four main types of iron deposits:
1. Soft iron ores formed by supergene leaching and enrichment of the weakly metamorphosed cherty iron formation; they are composed mainly of friable fine-grained secondary iron oxides (hematite, goethite, limonite).
2. Taconites, the fine-grained, weakly metamorphosed iron formations with above average magnetite content and which are also commonly called magnetite iron formation.
3. More intensely metamorphosed, coarser grained iron formations, termed metataconites which contain specular hematite and subordinate amounts of magnetite as the dominant iron minerals.
4. Minor occurrences of hard high-grade hematite ore occur southeast of Schefferville at Swayer Lake, Astray Lake and in some of the Houston deposits.

The Labrador Iron Mountain deposits are composed of iron formations of the Lake Superior-type. The Lake Superior-type iron formation consists of banded sedimentary rocks composed principally of bands of iron oxides, magnetite and hematite within quartz (chert) rich rock, with variable amounts of silicate, carbonate and sulphide lithofacies. Such iron formations have been the principal sources of iron throughout the world.

The Sokoman iron formation was formed as chemical sediment under varied conditions of oxidation-reduction potential (Eh) and hydrogen ion concentrations (pH) in varied depth of seawater. The resulting irregularly bedded, jasper-bearing, granular, o ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The mining contractor operates a fleet of largely new equipment, used initially to construct the site, to break, load and haul ore, waste rock and top soils to the designated locations. The in pit trucks haul the ore short distance from the James Pit to the beneficiation plant ore stockpiles. From the Redmond property, on highway units will be used to haul the ore to the processing site. The waste is hauled to the specific waste dump sites.

During the historic IOC operations, the yellow ores (limonitic), the lower grade iron ores (TRX) and high silica ores (HISI) were separated during the mining process and stockpiled as waste or for possible blending. LIM has upgraded the Silver Yards beneficiation plant to process the high silica, lower grade, and yellow ores to produce saleable products.

Long term mining plans are prepared for Redmond 2B & 5, historical IOC Stockpiles and Denault in order to provide the feed for Silver Yard Plant once James mine is exhausted which is anticipated by mid 2014.

The overall strip ratio for the Redmond 2B Mine is approximately 1.1 tonnes of waste per tonne of ore. Redmond 2B approved mine contains 700,000 tonnes of in pit resources.

The overall strip ratio for the Redmond 5 Mine is approximately 0.79 tonnes of waste per tonne of ore. Redmond 2B mine contains 1,633,000 tonnes of in pit resources.

As the optimization software did not have a constraint for minimum mining widths some deviation ........


Crushing and Grinding


Processing

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Summary:

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Operational Metrics:

Metrics2013
Ore tonnes mined 205,000 t

Reserves at March 31, 2014:

CategoryTonnage CommodityGrade
Indicated 2,094 kt Iron 56 %
Inferred 85 kt Iron 53.7 %



Heavy Mobile Equipment:

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Corporate Filings & Presentations:

DocumentYear
Management Discussion & Analysis 2014
Technical Report 2014
Technical Report 2013
Technical Report 2009
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