results confirm near surface copper oxides

Redbank Mines Limited
3 April 2008
Interim infill drilling results confirm near
surface copper oxides at Azurite
As part of the Redbank Oxide Copper Project expansion
definitive feasibility study (DFS) announced on 25 March
2008, infill and definition drilling is being carried out on the
Bluff, Azurite and Redbank deposits. This will enable
detailed pit planning and mine scheduling to be completed.
Preliminary results for the Azurite Deposit are reported
here. Further preliminary results from Redbank and Bluff
will be reported as program progresses.
A total of 10 shallow drill holes were drilled for a total of
311m at Azurite. Preliminary assaying of the holes has
been completed using field portable XRF. Quality
assurance and quality control routines demonstrate that
these results are satisfactorily consistent and reproducible
and typically within 15% of conventional laboratory assays.
These results are reported as interim results (refer Table
1) and should be regarded as indicative pending reporting
of final laboratory assays expected in 4 to 6 weeks.
Highlights from the drilling to date at Azurite:
Hole No
length grade
Cu
from
AZ08 19 14 m 1.48% 5 m
AZ08 20 4 m 1.25% 16 m
AZ08 21 17 m 1.33% 7 m
AZ08 22 12 m 1.74% 4 m
AZ08 24 8 m 2.08% 4 m
AZ08 25 10 m 1.31% 1 m
AZ08 28 5 m 5.55% from 9m, including
2m at 11.53%
The drilling was carried out in a close spaced pattern over
the centre of the mineralisation defined by previous drilling.
The results are consistent with a shallow ore body
developed by oxide dispersion from a series of small
fissures (see figure 1). The spectacular intercept in AZ08-
28 of 5m@ 5.5% Cu containing 2m@ 11.53% represents
one of these small fissures and the focus of the high grade
‘ore picking’ in the historical production period.
RC Drilling at Azurite – March 08
Redbank Mines Limited
ASX Announcement – ASX Announcement 3 April 2008 2
Grades are consistent or slightly higher than the average previously calculated for the inferred
resource at Azurite. Located only 1.5km from the Redbank Plant the Azurite oxide
mineralisation should provide an easily accessible ore source for the proposed expansion of the
oxide leach operations.
The Redbank deposit is presently being drilled with preliminary results expected within two
weeks.
Yours faithfully,
Redbank Mines Limited
Jerome G Vitale
Managing Director
Competent Person:
The information contained in this announcement, insofar as it relates to the Company’s exploration results
at the Redbank Copper Project, is sourced from information compiled by Dr D James Searle, B.Sc, PhD,
MAusIMM,. Dr Searle is an Executive Director of Redbank Mines Limited and has sufficient expertise
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 as defined in the 2004 Edition of the ‘Australasian Code
for Reporting of Mineral Resources and Reserves’. Dr Searle has approved the inclusion of the statement
in the form and context which it appears.
Redbank Mines Limited
ASX Announcement – ASX Announcement 3 April 2008 3
Figure 1
Redbank Mines Limited
ASX Announcement – ASX Announcement 3 April 2008 4
Table 1
Significant (>0.5% Cu) interim results from infill and resource definition drilling at the Azurite Deposit.
Final results will be reported when available in 4 to 6 weeks time. All holes have a 60o declination to
180o. Easting and northing are in GDA94 format +/1m.
Deposit Hole No
Easting
m
Northing
m
From
m To m
Intercept
m Cu %
AZ08 19 793470 8098860 5 19 14 1.48
26 30 4 0.69
AZ08 20 793470 8098850 5 13 8 0.69
16 20 4 1.25
AZ08 21 793470 8098840 1 3 2 1.01
7 24 17 1.33
AZ08 22 793460 8098850 4 16 12 1.74
32 33 1 0.75
AZ08 23 793460 8098840 5 6 1 1.23
11 15 4 0.86
16 17 1 0.52
18 19 1 0.82
25 26 1 0,52
AZ08 24 793460 8098830 4 12 8 2.08
AZ08 25 793450 8098850 1 11 10 1.31
19 22 3 0.87
AZ08 26 793450 8098840 1 7 6 0.83
17 20 3 0.82
AZ08 28 793480 8098840 9 14 5 5.55
Including 9 11 2 11.53
17 20 3 1.87
24 27 3 0.91