Flinders Mines : Ajax Mineral Resource Update

JORC Classification

Tonnage Mt

Fe%

SiO2%

Al2O3%

P%

LOI%

Total Inferred

43.1

55.1

10.6

5.0

0.06

4.7

Total Indicated

26.9

56.7

9.2

4.6

0.06

4.3

TOTAL

70.0

55.7

10.0

4.9

0.06

4.6

Inferred

62.0

55.4

10.0

4.8

0.06

5.1

Indicated

792.2

55.7

8.9

4.5

0.07

6.0

Measured

105.3

56.4

10.5

5.1

0.05

2.8

TOTAL

959.5

55.8

9.2

4.6

0.07

5.6

Inferred

82.4

53.6

11.4

5.8

0.05

4.9

Indicated

-

-

-

-

-

-

Measured

-

-

-

-

-

-

TOTAL

82.4

53.6

11.4

5.8

0.05

4.9

Inferred

144.4

54.4

10.8

5.3

0.06

5.0

Indicated

792.2

55.7

8.9

4.5

0.07

6.0

Measured

105.3

56.4

10.5

5.1

0.05

2.8

TOTAL

1,042

55.6

9.3

4.7

0.07

5.5

Criteria

Commentary

Sampling techniques

• Reverse Circulation (RC) drilling was used to collect 2m downhole samples for assaying.

• Typically, a 4 to 5kg sample was collected using a cone splitter. This sample was sent for major and trace element analysis via XRF of fused discs. All RC samples were submitted for analysis.

• Grade standards (Certified Reference Materials - CRM's) and field duplicate samples were used to monitor analytical accuracy and sampling precision.

• Diamond drilling methods were used to twin a number of the RC drillholes to test sample representivity and to collect samples for metallurgical test work.

• All diamond drillholes employed triple tubed coring methods with half core samples used for

QAQC purposes and whole core used for metallurgical test work.

Drilling techniques

• The vast majority of the downhole samples were collected from Reverse Circulation (RC) drill holes of approximately 140mm diameter utilising a face sampling hammer button bit.

• PQ sized Diamond (DD) holes were drilled for metallurgical work and HQ sized holes for geotechnical and QAQC purposes. All geotechnical holes were angled and the core was oriented.

Drill sample recovery

• Sample quality and recovery of both RC and DD drilling were continuously monitored during drilling to ensure that samples were representative and recoveries maximised.

• RC sample recovery was recorded as good (G) or poor (P) based on visual appraisal of sample size. The majority of all samples were logged as good.

• Diamond core recoveries are routinely recorded in the database as a measure of length of core recovered versus the depth drilled.

• Results of previous RC-DD twin holes indicate that there is no significant bias in the RC assays related to the presence of water, the sample particle size or the material types comprising the sample.

Logging

• Detailed geological logging of all RC and DD holes captured various qualitative and quantitative parameters such as mineralogy, colour, texture and sample quality.

• RC holes were logged at 2m intervals.

• The logging data is utilised for both Mineral Resource estimation and future mining and processing studies.

• All diamond core was digitally photographed.

• Logging data is collected via ruggedised laptops using Ocris logging software which applies inbuilt validation checks as data is entered. The data is subsequently downloaded into a dedicated Geobank database for storage.

Sub-sampling techniques and sample preparation

• RC drilling samples were collected in pre-labelled bags via a cone splitter mounted directly below the cyclone.

• Wet and dry samples were collected via the same technique. The majority of samples collected were dry.

• Samples were stored on site prior to being transported to the laboratory. Wet samples were allowed to dry before being processed.

• Samples were sorted, dried and weighed at the laboratory where they were then crushed and riffle split to obtain a sub-fraction for pulverisation. The pulverised sample was reduced further and combined with various reagents prior to oven fusion to create a fused disc.

Criteria

Commentary

Quality of assay data and laboratory tests

• All RC samples were submitted to Ultra Trace laboratory in Perth, an accredited laboratory with the National Association of Testing Authorities (NATA). Ultra Trace completed both the sample preparation and analytical assaying.

• All samples were analysed via X-Ray Fluorescence (XRF) of a fused disc for a standard suite of elements including: Fe, SiO2, Al2O3, TiO2, MnO, CaO, P, S, MgO, K2O, Zn, Pb, Cu, BaO, V2O5, Cr, Ni, Co, Na2O.

• Multi-point Loss On Ignition (LOI) was determined at 425, 650 and 1000 degrees celsius via thermo-gravimetric analysis.

• Field duplicates were collected and inserted anonymously into the sample stream at a rate of

4 per 100 samples.

• Pulp standards (CRM's) were inserted into the sample stream as blind samples by field geologists at a rate of 5 per 100 samples.

• No significant issues or concerns were apparent with the analysis of the field duplicates or standards.

• Laboratory duplicates and standards were also used as quality control measures at different sub-sampling stages. No significant issues have been identified.

• No formal analysis of sample size versus grain size has been undertaken, however, the sampling techniques employed are industry best practice.

• Approximately 5% of all samples have been sent to an umpire laboratory as an independent check. No significant issues were identified and an excellent correlation exists between the laboratories.

Verification of

sampling and assaying

• Significant intersections have been independently verified by company geologists using geological logging and observation of the mineral assemblage.

• Twin hole (RC v DD) analysis demonstrates a high degree of intersection and grade compatibility between the dominant RC samples and the twinned core with no evidence of any significant grade bias due to drilling method.

• Twins formed by RC drillhole pairs also show good correlation between the original and twin hole.

• Assay data is loaded directly into the Geobank database which is managed by Flinders staff. Visual comparisons are undertaken between the recorded database assays and hard copy records at a rate of 5% of all loaded data. No errors have been identified.

• Several unannounced audits of the assay laboratory were conducted while Flinders' samples were being processed. No issues or concerns were apparent.

Location of data points

• Drillhole collar locations have been surveyed using a Differential GPS with an accuracy of

• Collar surveys are validated against planned coordinates and the topographic surface.

• Downhole surveys have not been carried out as the vast majority of the drillholes are vertical and relatively shallow meaning that any minor departures from the planned drilling direction will have minimal to no impact.

• The primary grid used is Map Grid of Australia 94, Zone 50 (GDA94). Vertical datum is the

Australian Height Datum (AHD).

• Topographic surface uses Lidar 50cm contours captured in 2009.

Data spacing and distribution

• The drill grid spacing varies between deposits.

• For the majority of deposits, a nominal spacing of approximately 100m by 125m is achieved. The Delta deposit is drilled at a spacing of approximately 50m by 50m over much of its area while Ajax is approximately 100m by 500m with infill in some areas to 100m by 125m.

Orientation of data in relation to geological structure

• As the mineralisation comprises predominantly flat lying valley infill deposits, the vertically orientated drilling represents an ideal sampling orientation. The underlying bedded deposits are hosted by sub-horizontal Banded Iron Formation meaning that the sampling is also near ideal.

• Localised high angle structures within the basement lithologies, particularly in the hills, may result in less ideal sampling situations.

Criteria

Commentary

Sample security

• Sample chain of custody is managed by Flinders.

• Samples in calico bags are packed into polyweave bags and then placed into heavy duty bulk bags for transport to Tom Price. They are then transported via commercial freight directly to the laboratory.

• Consignment notes for each submission are tracked and monitored.

Audits or reviews

• No formal audits or reviews have been undertaken. Optiro (independent Mineral Resource Consultant) has reviewed QAQC and twin hole analysis reports prepared by Flinders and undertaken independent validation of the database. No significant issues were identified.

Criteria

Commentary

Mineral tenement and land tenure status

• The Pilbara Iron Ore Project (PIOP) comprises two 100% FMS owned tenements, M47/1451 (Blacksmith) and E47/1560 (Anvil), located approximately 70km NW of Tom Price.

• The tenements lie within the Eastern Guruma Native Title Determination. Flinders has a current Native Title Agreement in place.

Exploration done by other parties

• Very little previous exploration has been undertaken by other parties. Robe River Mining undertook regional scale iron exploration while a number of other parties have undertaken diamond exploration.

Geology

• Local bedrock geology is dominated by the Dales Gorge, Whaleback Shale and Joffre Members of the Brockman Iron Formation. Incised into this bedrock are channel systems which contain buried Channel Iron Deposits (CID) and Detrital Iron Deposits (DID). Some areas of the bedrock are also mineralised forming Bedded Iron Mineralisation.

Drill hole Information

• Recent infill drilling on a 100m by 125m grid has added 57 RC holes for 1,662m to the Ajax deposit dataset. The current Ajax dataset now comprises 150 RC holes for 4,848m. This report relates to Mineral Resources based on this drillhole dataset. Within the context of the PIOP, the relatively small number of new drillholes at the Ajax deposit are not considered material and have not been documented in detail. Diagrams showing the location of drillhole collars are included in the accompanying release.

Data aggregation methods

• All intersections are determined using a minimum 50% Fe cut, maximum 10% SiO2 and a maximum of 2m internal dilution.

• As all samples are the same length, assays are averaged over the total intersection.

Relationship between mineralisation widths and intercept lengths

• The majority of drillholes are vertical and the ore body is predominantly horizontal, thus any intersection quoted represents an approximation of the true width of the mineralisation. Minor localised high angle structures may result in exceptions to this in some drillholes.

Diagrams

• Appropriate diagrams are included as part of the accompanying release, including a plan of drill hole collar locations and defined Mineral Resource areas as well as representative cross sections

Balanced reporting

• No new exploration results are being reported. Due to the relatively small size of the

Ajax Mineral Resource, changes are not considered to be material and as such, drillhole information has not been reported.

Other substantive exploration data

• See comments in Section 3 regarding new bulk density estimates.

Further work

• There are currently no plans to undertake further drilling or exploration activities.

Criteria

Commentary

Database integrity

• Logging data is collected via ruggedised laptops using Ocris logging software which applies inbuilt validation checks as data is entered. The data is subsequently digitally downloaded into a dedicated Geobank database for storage. Assay data is loaded directly into the

same database. Visual validations of the assay and geological data are ongoing during the modelling and estimation process. The database is currently managed by qualified Flinders' staff with access restricted commensurate to the tasks they undertake. A physical check of assays within the database versus hard copies is done at a rate of 5%. No errors have been identified.

Site visits

• The Competent Person for Flinders Mines is a full time employee of Flinders Mines Ltd who has made multiple site visits when drilling operations are in progress to observe drilling progress, sample collection geological logging, and general sample handling and logistics. Personnel from Flinders Mineral Resource consultant, Optiro, have also visited and reviewed the project site, deposit geology, drilling progress, sampling methods and sample handling.

Geological interpretation

• Confidence in the geological interpretation is low across most of the deposit where drill spacing is coarse and higher in areas with increased drilling density. The geological interpretation has been built up over time and is based on geological logging and geochemistry of RC and DD samples.

• Geological domains representing various types of Bedded Iron, Detrital Iron and Channel Iron Deposits (BID, DID and CID) are defined using chemical and physical characteristics. Surfaces representing the base of each of these domains are compiled from sectional interpretations. These surfaces are used to constrain the estimation process. Each drillhole sample is assigned to one of these domains.

• The stratigraphy of the deposit is well understood, however alternative geological interpretations are possible due to the widely spaced nature of the majority of the drilling, but are not likely to have a material effect on the overall resource estimate. The confidence in the stratigraphic interpretation and continuity of the BID mineralisation underlying the DIDs and CIDs would be improved with further closer spaced drilling.

Dimensions

• Mineralisation at the Ajax deposit extends in a southeast - northwest direction for up to

5.4km and in a northeast - southwest direction for up to 1.2km. Mineralisation occurs from surface in some parts of all deposits down to a maximum depth of 36m below surface.

Estimation and modelling techniques

• Grade values were estimated into the above domains using 100mE by 100mN by 6m RL panels and ordinary kriging. Domain boundaries are all treated as 'hard' boundaries for grade estimation and these boundaries are volumetrically represented by sub-blocks no smaller

than 10mE by 10mN by 2mRL.

Moisture

• All tonnages are estimated on a dry basis. Moisture content measurements are being done as part of the current phase of metallurgical testwork.

Cut-off parameters

• The tabulated Mineral Resource is reported above a cut-off grade of 50% Fe.

Mining factors or assumptions

• It has been assumed that the traditional open cut mining method of drill, blast, load and haul will be used. This is consistent with current practice at similar deposits within the Pilbara.

Metallurgical factors or assumptions

• Multiple phases of metallurgical testwork have been undertaken. Results indicate that a saleable product can be achieved via a simple crush, screen and/or deslime process.

Environmental factors or assumptions

• All key Commonwealth and WA government on-tenement environmental approvals for the development of the project have been obtained. More detailed studies regarding possible waste and process residue disposal options are ongoing.

Criteria

Commentary

Bulk Density

• Bulk density has been calculated from physical PQ diamond core measurements via the water immersion method. In total over 700 samples across the range of geological units and deposits have been measured. Average density factors of between 2.62 t/m3 and

3.24 t/m3 have been applied to individual geological units across the project. Sample

numbers for RC and DID1 domains are low and an assumed density factor of 2.7 t/m3 is used. This is not considered to be material as these domains are normally below the 50% Fe reporting cut-off.

• The densities used are similar to known densities for like deposits across the Pilbara.

Classification

• The Ajax Mineral Resource is classified as Indicated and Inferred. Factors taken into account include drill spacing, geological and mineralisation continuity and estimation quality.

• The Mineral Resource classification reflects the views of the Competent Persons.

Audits or reviews

• Optiro (Flinders Mineral Resource consultant) has conducted a number of basic data and geological interpretation reviews during the compilation of the Mineral Resource estimate. Optiro personnel have been to the deposit site to observe the local geology, drilling methods, sampling methods and logging methods that result in the data that supports the geological interpretation and Mineral Resource estimation process. All practices and methods observed are considered by Optiro to be consistent with the classification applied to the Ajax deposit.

• No independent third party audits of the Mineral Resource estimate have been completed at this time.

Discussion of relative accuracy/confidence

• No direct testing of the relative accuracy and confidence of the Mineral Resource estimates has been undertaken. A small amount of infill drilling data has been added to the Ajax drillhole database supporting the Mineral Resource estimates since they were previously reported in 2010. This additional data has resulted in only very minor global tonnage and grade reporting differences. Due to the predominantly sparse drilling density, there is a low

degree of confidence in the Ajax Mineral Resource, hence the predominantly Inferred Mineral Resource classification. This is consistent with only minor changes from when it was last reported.