8
Capital project progress
The detail of the South African brownfields growth projects are discussed under the various shaft sections.
As the projects in PNG are greenfields in nature and do not deliver production ounces as yet, they are
discussed under this section.
Hidden Valley project
The feasibility update has been progressing well and it is expected that we will be able to submit the final
documented study update to the board by April 2006. This will include sign-off on all technical aspects of the
study, as well as a cash flow model that will reflect the updated economics of the project.
Construction of the access road is progressing well with all road building equipment delivered to site.
Pioneering has reached the 18.5km mark of the 40km road, with some difficult terrain ahead which will slow
down the good progress made to date. It is expected that the pioneering crew will reach the proposed mine
camp site by the end of May with road completion planned towards June 2006.
The Hidden Valley Environmental Management plan (“EMP”) was completed and submitted to the
Department of Environment and Conservation on 22 November 2005. This EMP has to be approved by the
department before any site works can start. The department has three months to respond and question
aspects of the plan after submission, which fits in with the proposed project construction timeline.
Cut-off and pit optimisation have resulted in significant project improvements, albeit at marginally lower
recovery grades.
– Total recoverable ounces increased from 1.9M oz to 2.6M oz (which led to an increase in Life of Mine from
6.5 years to 9.5 years)
– Average head grade decreased to 2.2 g/t
– Strip ratio improved from 13:1 to 9:1
– Average annual bulk cubic metres (bcm) mined will be reduced from 19M bcm to 12M bcm
With the new design mill throughput has been planned to increase from 3.5 Mtpa to 4.2 Mtpa:
– Average gold produced per annum is planned at approximately 285 000 oz
– Total average silver produced per annum is planned at 3,9M oz which equates to 67 000 gold equivalent
ounces
– The average cost per ounce will run at approximately US$220/oz, net of silver credits
Re-engineered surface designs have led to:
– The tailings storage facility capacity being improved from 32 Mt to 43 Mt
– The waste dump’s design now complying with acid rock drainage and other environmental commitments
– The establishment of a low grade stockpile with a capacity of 7 Mt (0.8g/t – 1.3 g/t)
– Cost and schedule improvements in the Pihema creek diversion
– Site bulk earthworks being done in-house, costed and scheduled more accurately