SBM 6.67% 24.0¢ st barbara limited

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    leonora Leonora

    Gwalia

    Deep resource development drilling, initially
    targeting the known higher grades, of gold
    mineralisation between 1,200mbs and 1,500mbs was
    completed in late 2005 and early 2006. This drilling
    resulted in an Indicated and Inferred Resource
    estimate for Gwalia Deeps of 7.3Mt @ 8.5g/t gold,
    containing 2.0Mozs of gold. Total Resources for
    Gwalia, including the Intermediates, are now
    2.6Mozs.

    Subsequent to completing the Resource estimate hole
    GWDD11B intersected 12m @ 60g/t in the South West
    Branch Lode at 1,540mbs and is the strongest
    intersection to date for Gwalia Deeps. See Table 3.
    Deeper drilling which tested the mineralisation at
    1,720mbs intersected 7m @ 10.3g/t gold which represents a 240m down dip extension of the
    mineralisation from the previous deepest drill hole.
    This drill hole intersection is on the southern margin
    of the Gwalia mineralised system.

    Gold mineralisation is now confirmed to extend for
    1,090m down dip from the base of previous historic
    mining. The Gwalia Deeps Mineral Resource estimate
    of 2.0Mozs extends 525m vertically or 890m down dip
    below the base of previous mining.

    Further infill drilling to establish Indicated Mineral
    Resources for gold mineralisation between the base of
    the previous mining levels at 1,075mbs and 1,200mbs
    is underway and is scheduled to be completed during
    the June 2006 quarter.

    Diamond drilling from the surface will also be used to
    define remnant ore from the Intermediates Inferred
    Resources (0.59Mozs), some of which may be
    extracted as the Hoover Decline progresses past the
    old workings.
    Drilling continues with three rigs. A fourth rig is to
    be added during the June 2006 quarter.


    Tarmoola

    A Mineral Resource estimate for Tarmoola was
    completed following a review of the geological model.
    The Measured and Indicated Resources using 0.5g/t
    gold cut�]off totalled 58Mt @ 1.1g/t gold containing
    2.1Mozs of gold.
    Drilling of mineralisation located within a possible
    eastern wall cutback and the granite hosted
    mineralisation in North Pit, South Pit and to the west
    of South Pit is continuing.

    Leonora Feasibility Study

    The Leonora Feasibility Study comprises the Gwalia
    Deeps and the Tarmoola Open Pit and Processing
    Plant. Feasibility work is underway to determine the
    viability of commencing gold production at the
    earliest possible time. The Feasibility Study is
    considering both stand alone and combined
    operations for Tarmoola and Gwalia Deeps and is on
    track to meet the planned completion date in the
    September 2006 quarter.
 
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