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07/03 - Dargues Project Update

  • Changes to planned mining method to yield significant cost savings
  • Work continuing to evaluate on-site and off-site processplant solutions, with substantial additional savings forecast
  • Project on track to achieve estimated cash operating cost of $700/oz* over initial 5-year mine life

Unity Mining Limited (ASX:UML) (Unity or the Company) is pleased to provide
an update on technical studies underway in relation to its Dargues Gold Mine
development project in New South Wales.

Over the past two months, Unity in conjunction with technical specialists from
AMC Consultants, Mining One, IMO and others, has undertaken a detailed review
of the mining methods originally proposed in the Dargues project feasibility study
completed in 2010. This mine optimisation study has concluded that a change in
mining method from a “top-down” to a “bottom-up” strategy would deliver an
improved outcome. Specifically, the bottom-up mining method will deliver:

  • greater schedule flexibility by providing multiple independent mining areas;
  • an improved geotechnical regime using sequenced stoping;
  • a reduction in backfill operating costs and infrastructure requirements; and
  •  improved potential to extract the mine’s crown pillar.

The two mining methods are shown diagrammatically on the following page.

Preliminary assessment of the cost impacts indicate savings of $4-5 million over
the initial 5-year mine life from a combination of upfront capital savings and
ongoing operating costs reductions, and represent around 15% of the targeted
savings from the Project 30 initiative - which is targeting cost savings of $30
million over the initial 5-year life of the project compared with the current project
financial model.

Work is also underway to optimise the design, procurement and project
management strategies for both on-site and off-site process plant solutions.
These areas are expected to yield the bulk of the Project 30 savings yet to be
realised. Key to this is the relocation of equipment from Bendigo, or sourcing
from alternate suppliers given changed market conditions. More particularly,
whilst processing of the Dargues’ concentrate at Unity’s Bendigo gold processing
plant remains the baseline assumption, a number of alternatives are currently
under review, ranging from processing at existing facilities located closer to the
Dargues Mine, through to the potential sale of a gold concentrate in lieu of further

The Company will provide further updates on the Project 30 initiative in the March
2014 Quarterly Report.

* Net of state royalties and silver credits

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