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ANNOUNCEMENT TO THE AUSTRALIAN STOCK EXCHANGE 19 OCTOBER 2005

FIFSTAVINE: AT # : ESOU : GETO: #: : HCL FSTA: KCOLD : : : KOLEO: I

2.34 MILLION TONNES @ 4.1 G/T FOR OVER 300,000 OUNCES GOLD
PRE-FEASIBILTY STUDIES COMMENCE
DRILL PROGRAMS CONTINUE TO SIGNIFICANTLY INCREASE RESOURCE

FIRST MINERAL RESOURCE FOR BRIGHTSTAR GOLD PROJECT

Directors of A1 Minerals Limited (A1) are pleased to announce the Company's first Mineral Resource for the BrightStar Gold Project, situated near the gold mining centre of Laverton in Western Australia.

The total Mineral Resource stands at 2.34 million tonnes @ 4.1 g/t for 311,000 ounces using a 1 g/t lower cut-off (Table 1).

The Mineral Resource includes near surface component (less than 100 metres depth) of 1,382,400 tonnes @ 3.35 g/t (1 g/t lower cut); plus 304,300 tonnes @ 10.3 g/t inferred resource beyond 100 metres depth (3 g/t lower cut Beta, 5 g/t lower cut Alpha) (Table 2).

BrightStar Alpha and Beta have been densely drilled to provide a high level of geological confidence for the reporting of the Measured and Indicated Resource Classifications.

Suite 34 : 25 Walters Drive : Osborne Park : Western Australia : 6017 Telephone (618) 9244 1400 : Facsimile (618) 9244 1600 : ASX Code AAM Email [email protected] website www.a1minerals.com.au
ABN 44 100 727 491 : ASX Code AAM : Member of AMEC

Carl College

ANNOUNCEMENT TO THE AUSTRALIAN STOCK EXCHANGE

Alpha and Beta are 15 kilometres apart and situated close to three gold treatment plants (Figure 1).

The resource estimate reflects high standards of quality assurance, geological confidence and realistic economics of expected mining methods.

Alpha and Beta include the following positive economic factors

Early cashflow expected from mineralistion starting at surface; $\blacksquare$
Abundance of high grades indicating a potential solid profit margin and low risk; $\blacksquare$
Metallurgical testwork completed to date shows high gold recovery; $\bullet$
Mining Leases granted, Native Title agreement $\blacksquare$
Proximity to existing gold plants; infrastructure: indicating flexibility for treatment options.

The resource has applied lower cut-off grades considered realistic for a high rate of conversion to reserves, plus good potential for upgrade of resource from Inferred to Indicated, and Indicated to Measured, with limited additional drilling.

A1 has focused on the higher grade mineralisation to suit today's cost structures and should be well placed to take advantage of any rise in the price of gold.

Suite 34 : 25 Walters Drive : Osborne Park : Western Australia : 6017 Telephone (618) 9244 1400 : Facsimile (618) 9244 1600 : ASX Code AAM Email [email protected] website www.a1minerals.com.au
ABN 44 100 727 491 : ASX Code AAM : Member of AMEC

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BRIGHTSTAR ALPHA RESOURCE

The majority of the Alpha resource is generally a shallow plunging shoot extending from surface that is geologically constrained within moderate to steeply dipping chloritised shears (Figure 2).

Alpha is densely drilled within the southern 600 metres of the 2 kilometre long strikelength. Here, most of the resource is near surface (<100 metres) and drilling is on a 20 metre sectional basis, in some cases, 10 metres. The drill density has provided a higher level of confidence in the geological interpretation and grade estimation where mineralisation continuity is well demonstrated.

FIGURE 2: GEOLOGICAL MODEL - ALPHA - SOUTHERN END

Suite 34 : 25 Walters Drive : Osborne Park : Western Australia : 6017 Telephone (618) 9244 1400 : Facsimile (618) 9244 1600 : ASX Code AAM Email [email protected] website www.a1minerals.com.au ABN 44 100 727 491 : ASX Code AAM : Member of AMEC

BRIGHTSTAR BETA RESOURCE

The Beta resource is hosted within narrow sub-vertical quartz veins, typically up to two metres thickness and has been densely RC (reverse circulation) drilled on 20 metre sections at open pit depths (100 metres). Open pit exposures have enhanced the geological modelling of Beta and confident predictability of mineralised quartz veins at depth further provides a more robust model.

Recent mining history of the deposit provides increased knowledge of costs, mining methods and recoveries; consequently, the expectation of a high conversion rate of resource to reserves immediately below the pit floor.

A1 believes it will achieve improved optimisation of the resource by combining the two existing open pits. Reverse circulation drill holes on 20 metre section spacing over 200 metres strike between the pits show a number of high grade intercepts (Figure 3).

The relatively shallow depth of these intersections and synergies to be achieved by a potential single, larger open-pit should significantly enhance BrightStar Beta's resource conversion to a reserve. It is anticipated that the benefits of potentially amalgamating the pits include: the ability to access the further resource between the pits; the development of an access ramp to facilitate mining to depth beyond current pit limits; and establishing a more efficient open pit operation.

FORWARD PROGRAM

The resource gives A1 the basis to commence pre-feasibilty studies with a view to a decision to mine as early as next year. Optimised open pit outlines are currently being designed for Alpha and Beta.

Additionally, A1 plans to grow the BrightStar Gold Project resource substantially by drilling extensions to Alpha and Beta and by drilling recently acquired known gold occurrences within the surrounding 400 square kilometres of prospective landholdings.

Suite 34 : 25 Walters Drive : Osborne Park : Western Australia : 6017 Telephone (618) 9244 1400 : Facsimile (618) 9244 1600 : ASX Code AAM Email [email protected] website www.a1minerals.com.au
ABN 44 100 727 491 : ASX Code AAM : Member of AMEC

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موجود الروابط

FIGURE 3: BRIGHTSTAR BETA RC INFILL DRILLING

ANNOUNCEMENT TO THE AUSTRALIAN STOCK EXCHANGE

TABLE 1: BRIGHTSTAR GOLD PROJECT TOTAL RESOURCE

Lower Cut-Off Grade		Dearneem Resource			Buship
₹		Tonnes Grade Ounces $g/t$ Au		Annual		ne an	BESTHER	ECT PRO
Total Alpha 1 g/t	178,900	3.81	21,910	311,900*	$2.68*$	26,840*	631,400	4.20	85,280	1,122,200	$\frac{1}{3.72}$	134,030
Total Beta 1 g/t	68,900	$rac{1}{2}$	$rac{80}{3}$	628.900	3.85	77,830	522,300	5.40	90,670	1,220,100	4.52	177,360
Total 1 g/t	247,800	3.86	30,770	940,800	3.46		104,670 1,153,600	4.74	175,950	2,342,200	4.14	311,390

TABLE 2: BRIGHTSTAR GOLD PROJECT INCLUDED RESOURCE (considering likely mining scenarios)

Lower Cut-Off		Measured			$\frac{1}{2}$			$\frac{1}{2}$
Grade		Resource			$\frac{1}{2}$
₹	Tonnes Grade	g/t Au	Ounces	Tonies Grade	GALID	San Tio		BOOKS
Npha 1 g/t (0–100m depth)	178,900	$\frac{1}{331}$	21,910	311,900	288 2	26840				490,800	ල ෆ	48,750
Beta $1$ $gt($ $0-100$ m depth)	68,900	8 4.P	8.860	628,900	385	77,830	193,800	ุด ด	13,200	891,600	348	99,890	$\frac{1}{2}$
Sub Total 1 $gt(0-100m$ depth) #	247,800	86 ന്	30,770	940,800	3.46	104,670	193.800	လ လ	13.200	1,382,400	335	148.640

Alpha 5 g/t (>100m depth)							128,600	56 0.	39,500	128,600	56 9.	İ 39.500
Beta $3gt(>100m$ depth)							175,700	10.84	61,230	175,700	10.84	$\ddot{\ddot{\imath}}$ 61.230
Sub Total (>100m depth) $#$							304,300	10.30	100,730	304,300	10.30	100,730
Included Total ##	247,800	3.86	30,770

includes BrightStar North

" includes post model intersections

*** inferred from arithmetic sectional interpretation

**** inferred shallow resource north of old Mikado Pit

Included Total = # Sub total 1.0 $(< 100m)$ plus sub total $(> 100m)$ Alpha upper cut of 60 g/t, Beta upper cut of 50 g/t
Tonnes rounded to nearest 100 and ounces to nearest 10

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Suite 34 : 25 Walters Drive : Osborne Park : Western Australia : 6017
Telephone (618) 9244 1400 : Facsimile (618) 9244 1600 : ASX Code AAM
Email [email protected] website www.atminerals.com.au
ABN 44 100 727 491 : ASX

RESOURCE ESTIMATION METHOD SUMMARY

Alpha

Geological outlines were modeled in Micromine at a 0.3g/t lower cut off grade, based on assay population distribution, and wireframed based on the interpretation of mineralization as structurally controlled within a shallow north plunging shoot system. All aircore, RC and diamond drilling was included in the interpretation. Two drill intersections reported post modeling were manually incorporated into the final estimate. Log probability plots indicated an upper cut off grade of 60 g/t Au was appropriate. Assay data were based on 1 metre sampling.

A block model was created based on 2m x 5m x 4m block size. A bulk density of 2.4 was applied for oxide. 2.5 for transition material and 2.65 for fresh material, with boundaries determined from logging included in the model. Estimation of block grades was carried out using an inverse distance squared method initially. However, ordinary kriging was conducted to determine the kriging variance in order to provide variography to optimize the search parameters.

A lower cut off grade of 1g/t Au was applied between surface and 400mRL (100 metres depth). Below this, lower cut off grades of 3 g/t and 5 g/t were applied to reflect likely mining scenarios. The model reported the estimate at a range of lower cut off grades.

The selection of resource classification has been based on data density (considering kriging variance), confidence in the geological interpretation, data quality and confidence in the estimation. Manual interpretation of mineralization trends on cross section, long section and level plan were applied to support the interpretation for the estimate.

Beta

There is an extensive historic and recent mining history at Beta which includes the old Mikado Pit and underground workings as well as the adjacent Aztec Pit. This has provided a strong geological and mining basis for the interpretation and resource estimate.

Modelling was initially conducted in Micromine as for the Alpha resource. However, because of the narrow, complex directional nature of the multiple and often high grade lodes, these assays were not always reporting in the model and for this reason a concurrent manual interpretation conducted on cross and long sections was preferred and used in the estimate.

An upper cut of 50 g/t was applied, based on log probability determinations. Lower cut off grades of 1 g/t Au and 3 g/t Au were selected based on expected mining scenarios. A bulk density of 2.4 for oxide, 2.5 for transition and 2.65 for fresh was applied considering testwork conducted by the previous owner.

The selection of resource classification has been based on a combination of; previous mining history, data density, confidence in the geological interpretation, data quality and confidence in the estimation. Manual interpretation of mineralization trends on cross section, long section and level plan were applied in the estimate.

John Williams B.Sc. MAusIMM Managing Director

The information in this report that relates to mineral resource is based on information compiled by Mr Tony Ryall, who is a member of the Australasian Institute of Mining and Metallurgy. Mr Ryall is self employed and an Independent Geological Consultant and has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person (JORC Code). Mr Ryall consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.

Suite 34 : 25 Walters Drive : Osborne Park : Western Australia : 6017 Telephone (618) 9244 1400 : Facsimile (618) 9244 1600 : ASX Code AAM Email [email protected] website www.a1minerals.com.au
ABN 44 100 727 491 : ASX Code AAM : Member of AMEC

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ستدرج المردا

AI assistant

BRIGHTSTAR RESOURCES LIMITED Capital/Financing Update 2005

64581_rns_2005-10-18_51a3dcb6-3876-4a27-9d4e-73e34d03f420.pdf

ANNOUNCEMENT TO THE AUSTRALIAN STOCK EXCHANGE 19 OCTOBER 2005

FIFSTAVINE: AT # : ESOU : GETO: #: : HCL FSTA: KCOLD : : : KOLEO: I

FIRST MINERAL RESOURCE FOR BRIGHTSTAR GOLD PROJECT