Hi Tony,Probably repeating myself from yesterday - but the only...

Hi Tony,

Probably repeating myself from yesterday - but the only info I have to hand is from the 11 Dec press release - see below

It deals to some extent with beneficiation for SiO2 and Al2O3 - which clearly works better for pisolite than mixed detritals. But no info relating to where the samples came from etc.

I am sure WR and his crew would be very happy to answer questions. Processing the detrital IO seems to be central to the future for BRM - so there should be some cogent answers!

Elec
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Ore characterisation testwork confirms high potential to upgrade detrital mineralisation within Marillana

Initial screening testwork confirms the potential to upgrade lower grade detrital mineralisation overlying the main Channel Iron Deposit (CID) mineralisation zone in the North-West Sector.

Average 21 � 25% increase in Fe grades and commensurate 25-40% reductions in Al2O3 achieved

The resulting product is of comparable Fe grade (~58% Fe) to the CID ore.

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Initial Metallurgical Upgrade Testwork Results

Initial screening testwork results have been received from the low-grade detrital mineralisation collected from the recent sonic core drilling programme at the North-West Sector. Seven composite samples, based on differing detrital component lithologies, were submitted for testwork.

The results demonstrate the potential to significantly upgrade the iron content of this material by using a relatively simple screening process, with average Fe upgrades of 20-25% achieved. An eighth test on low-grade, partly reworked CID mineralisation demonstrated the potential to upgrade this mineralisation as well � to a lesser, but still potentially significant, extent.

Average upgrade for pisolite detritals = 25% at 59% weight recovery.
Average upgrade for mixed detritals = 21% at 46% weight recovery.
Al2O3 grades were reduced by 25 � 40% for pisolite detritals and by 28 � 38% for mixed detritals.
SiO2 grades were reduced by 55 � 70% for pisolite detritals and by 25 - 45% for mixed detritals.
Pisolite mineralisation represents about 25 � 50% of the total detrital accumulation.

The upgrade was achieved by simple screening and retention of the +0.6mm fraction for the pisolite detritals and the +0.6mm/-10mm size fraction for the mixed detritals. Further testwork is currently being carried out to determine if better recoveries and upgrade factors can be achieved by refining the process.

The samples tested comprise lower grade detrital mineralisation which overlies the higher grade CID mineralisation that forms the basis of the recently announced Indicated Mineral Resource for the North-West Sector of 43.5Mt grading 57.6% Fe.

These results give the Company confidence that a marketable upgrade product can be produced from the blanket of detrital mineralisation overlying the CID mineralisation in the North-West Sector.
Ore characterisation testwork on the North-West (CID) mineralisation, including thermal analysis and sinter tests are continuing.