CHALLENGER GOLD MINE
Gold production at Challenger was 21,893 ounces.
March performance was restricted by poor underground
equipment availability and an unpredicted shortage of
experienced operators in January and February resulting
in a shortfall of 190m of development advance during
the quarter.
Mined ore grade reconciled at the mill achieved 4.32 g/t
during the quarter.
Total cash operating costs for the quarter were US$955/oz
(including royalties), compared to US$612/oz in the
December quarter.
A total of 1,561 metres of development was achieved
during the quarter. Decline development continues to
focus on crossing the ‘79 Fault’ as well as developing on
levels 800 and 780 at Challenger West. The Challenger
West development included driving on the lode
confirming high grade continuity over a strike length of
120 metres as well as a second high grade narrow
structure some 50 metres further west. Trial mining of
this area will occur during the June quarter.
Drilling from the 280 drill drive continued to delineate
the Main Shoots on the eastern side of the fault
indicating that the M2 feature continues as expected.
Additional drilling is planned from the 215 level to
define the Challenger West shoot at the base of the
existing development.
The total reconciliation continues to remain positive on
completed levels, predominantly within the M2 Shoot,
which accounts for 70% of all of the ore feed. The last
two completed levels in the M2 Shoot, 340 and 320
levels, average 60% above reserve ounces. The impact of
the ‘79 Fault’ is expected to affect total level
reconciliations until a fully extended level can be reestablished
on the other side of the fault. On a positive
note diamond drilling has confirmed that the M2
extends further above the anticipated cross over level of
210 level which was not in the current design plan.
The predominant sources of production came from the
320, 300 and 280 levels of the M2 shoot.
Resource Development
A number of targets have been evaluated with both
underground and surface drilling. Several significant
intersections have been returned (see Appendix A).
M1-M2 Shoot System below the ‘79 Fault’
One exploratory hole has been drilled from the 280
exploration drive, targeting the M2 Shoot between 250
and 230 levels, below the ‘79 Fault’. This hole has
returned significant intercepts, including 1.5m @ 157.9 g/t
gold and visible gold up to twenty vertical metres above
the current M2 resource model. Additional drilling on |
this target has occurred from the 260 level with
numerous significant intersections, including 2.0m @
69.4 g/t and 4.0m @ 11.3 g/t gold, being returned.
Challenger West
The Challenger West Shoot below the current mining
level continues to be a focus of underground drilling.
This includes a vertical fan of holes from the 640 level,
targeting the shoot between 550 and 470 levels and
from the 215 level, targeting Challenger West on the
210 Level. This drilling is designed to extend the current
resource model. Results are pending.
The Challenger West structure has now been defined
over a vertical length of 1,000 metres and remains
open at depth.
South East Zone (SEZ)
A series of high grade intersections on both the 1025
and 280 levels, were reported in the previous quarter.
These results, from levels 745 metres apart, have
significantly upgraded the potential for the SEZ to
host localised high grade shoots within a well-defined
structural corridor that has received little or no
previous evaluation.
Follow up drilling on the 1025 level with three flat fans
of drill holes is designed to determine the vertical
extent of the mineralisation. Results are pending.
The south westerly extension of the SEZ, identified
adjacent to the 280m exploration drive, has been
targeted with a horizontal fan of holes. An initial
intersection of 2.0m @ 14.1 g/t gold from the first hole
completed demonstrates encouraging continuity of high
grade mineralisation. All other results are pending.
Challenger South West
The Challenger South West prospect has been targeted
with eleven surface RC holes. This programme in filled
previous drilling (last drilled in 1998) which had
intersected extensive gold mineralisation, including
intersections of 6m @ 13.5 g/t and 2.0m @ 21.0 g/t
gold. Two relatively high grade intersections, 3.0m @
9.0 g/t and 3.0m @ 9.5 g/t gold were returned within a
broad zone of lower grade mineralisation. Recent and
historic data is currently being evaluated.
SAFETY, ENVIRONMENT AND COMMUNITY
There were no Lost Time Injuries recorded during the
quarter at Challenger. |