West Pilbara Project
Overview

The West Pilbara Project comprises a number of exploration tenements (Duck Creek, West Hamersley and Mt Stuart) within a 30 km radius located about 110-150 km WNW of Paraburdoo in the West Pilbara region.

Figure 3: Location of West Pilbara tenements

At Duck Creek, mineralisation comprises discrete mesas of channel iron deposits (CID) 15 to 30 m above the surrounding plains, with stripping ratios expected to be very low for the targets identified. Seven mesas containing ore grade CID mineralisation have been identified from surface sampling, but only six have been drilled due to access limitations.

An initial reconnaissance RC drilling program conducted during late 2010, comprising 1,657 m in 45 holes, confirmed significant DSO grade mineralisation at shallow depths (often commencing at surface) in all targets drilled. Mineralisation contains very low levels of the contaminant phosphorous. Other contaminant levels (silica and alumina) are comparable with other West Pilbara CID Mineral Resources reported by aspiring producers.

Brockman has completed an Inferred Mineral Resource estimate of 18.3 Mt grading 56.5% Fe, for the channel iron deposit (CID) mineralisation at Duck Creek (E47/1725), as detailed in Table 6 below. The Mineral Resource estimate been classified in accordance with guidelines of the 2004 Edition of the Australasian Code for Reporting of Identified Mineral Resources and Ore Reserves (JORC, 2004). It has not been updated since to comply with the JORC 2012 on the basis that the information has not materially changed since it was last reported. The Mineral Resource estimate is based on the results of 45 vertical RC holes drilled on sections varying from approximately 200 to 400 m apart along the long axis of each mesa (as shown in Figure 4), supported by surface sampling to confirm the lateral extent of mineralisation.

Table 6: Duck Creek Mineral Resource estimate – (at a lower cut-off grade of 54% Fe)
Mesa Classification Tonnes
(Mt)
Fe
(%)
CaFe*
(%)
SiO2
(%)
Al2O3
(%)
S
(%)
P
(%)
LOI
(%)
1 Inferred 4.1 55.8 63.2 4.40 2.69 0.032 0.058 11.8
2 Inferred 5.1 56.6 64.1 3.58 2.44 0.041 0.037 11.7
3 Inferred 2.3 56.4 61.6 5.71 4.53 0.065 0.023 8.4
4 Inferred 1.4 56.4 61.9 6.43 3.34 0.077 0.087 8.9
5 Inferred 3.0 56.3 61.4 6.32 4.07 0.071 0.020 8.4
6 Inferred 2.4 58.0 62.8 5.15 3.25 0.112 0.015 7.6
All Inferred 18.3 56.5 62.8 4.91 3.22 0.060 0.037 10.0

* CaFe represents calcined Fe and is calculated by Brockman using the formula CaFe = Fe%/((100-LOI)/100)

Figure 4: Drill hole locations and CID mesas at Duck Creek

The West Hamersley Project comprises one granted Exploration Licence (E47/1603), covering 54 km2 and containing extensive areas of outcropping Brockman Iron Formation.

The Mt Stuart prospect comprises one Exploration Licence containing outcropping CID mineralisation as mapped by the Geological Survey of Western Australia

The West Pilbara results confirm the prospectivity of Brockman's tenure in the area and support the Company's objective of developing a production hub in the West Pilbara, as part of its broader resource and business development strategy in the Pilbara region.

Competent Persons Statement

The information in this report that relates to Mineral Resources and Ore Reserves at Marillana is based on information compiled by Mr I Cooper, Mr J Farrell and Mr A Zhang. The information in this report that relates to Mineral Resources at Duck Creek is based on information compiled by Mr A Zhang.

The Ore Reserves statement has been compiled in accordance with the guidelines defined in the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (The JORC Code - 2004 Edition). The Ore Reserves have been compiled by Mr Iain Cooper, who is a Member of Australasian Institute of Mining and Metallurgy and a full time employee of Golder Associates Pty Ltd. Mr Cooper has sufficient experience in Ore Reserve estimation relevant to the style of mineralisation and type of deposit under consideration to qualify as Competent Person as defined in the 2004 edition of the "Australasian Code for Reporting of Mineral Resources and Ore Reserves". Mr Cooper consents to the inclusion of the matters based on this information in public releases by Brockman, in the form and context in which it appears.

Mr J Farrell, who is a Member of the Australasian Institute of Mining and Metallurgy and formerly a full-time employee of Golder Associates Pty Ltd, produced the Mineral Resource estimates for Marillana and Ophthalmia based on the data and geological interpretations provided by Brockman. Mr Farrell has sufficient experience that is relevant to the style of mineralisation, type of deposit under consideration and to the activity that he is undertaking to qualify as a Competent Person as defined in the 2004 edition of the "Australasian Code for Reporting of Exploration, Results, Mineral Resource and Ore Reserves". Mr Farrell consents to the inclusion in this report of the matters based on his information in the form and context that the information appears.

Mr A Zhang, who is a Member of the Australasian Institute of Mining and Metallurgy and a full-time employee of Brockman Mining Australia Pty Ltd, provided the geological interpretations and the drill hole data used for the Mineral Resource estimations at Marillana. He produced the Mineral Resource estimate for Duck Creek based on data and geological compilation by Brockman. Mr Zhang has sufficient experience that is relevant to the style of mineralisation, type of deposit under consideration and to the activity that he is undertaking to qualify as a Competent Person as defined in the 2004 edition of the "Australasian Code for Reporting of Exploration, Results, Mineral Resource and Ore Reserves". Mr Zhang consents to the inclusion in this report of the matters based on his information in the form and context that the information appears.

1 The Mineral Resources and Reserve Estimations for Marillana were prepared and first disclosed under JORC Code 2004. Neither has been updated to comply with the JORC Code 2012 on the basis that the information has not materially changed since it was last reported. All material assumptions and technical parameters underpinning the estimates, continue to apply and have not materially changed, nor have the Competent Person's findings been materially modified.