RE: Open Pit30 Apr 2024 08:05
Thank you for your letter of 22 April and for your support as a shareholder. We take governance and transparency very seriously and so wanted to respond in detail to your concerns.
Before addressing some your concerns directly, I wanted to explain where we believe we are in the strategy that was outlined with the arrival of the new team from 2020. Firstly, we embarked on a 3- year reset programme to restore Sukari production towards 500,000 ounces per annum from this year. We have also made considerable progress on improving the quality of our operations, reducing AISC, reducing carbon emissions, and maintaining an excellent safety record. Our production guidance for this year remains 470,000 to 500,000 ounces
With the reset successfully delivered, we are now increasing our focus on growth. This includes exploration and development work in Egypt and also at our Doropo project in Cote d’Ivoire, where we will deliver a DFS this year.
As regards your concerns regarding the grade of ore being mined at Sukari, I’m sure the following points will set your mind at rest.
At the US1,450/oz gold price we use for our reserves – we have the following economic cut-off grades (the minimum economic grade) – any material mined above this is cashflow generative at a gold price above US1,450/oz. These are externally Audited and verified (NI 43-101 and Reserve Audits).
Open pit cut-off grade for reporting
0.4g/t Au for mill processing
0.2g/t Au cut-off for dump leach
Open pit design is based on a cut-off of 0.4g/t Au for M&I Mineral Resources only
On a full year basis within our mine scheduling, we aim for a mill throughput from the open pit of ~ 11Mt @ 1-1.1g/t in line with our open pit reserve grades, this is based on our detailed modelling of the open pit resource which we continue to refine.
What we’re seeing is that in addition to mining our modelled and planned ~11Mt of open pit ore for the mill, in certain areas that were difficult to resource drill due to the historic terrain, material that we planned to mine as waste in the resource model is mineralised at grades above the economic cut-off grade when we grade control (GC) drill it. It is therefore reclassified to low grade ore:
This ore is around 0.4-0.45g/t and the majority is sent to the dump leach which, as above, has a cut-off grade 0.2g/t, we do not process this material – we invested in dump leach expansion last year and this has generated good ounces with a very low cost. We would have had to originally mine and dump the material on waste dumps but now are able to realise economic ounces from this.
Also, depending on where we are in the pit – typically near surface push backs - we mine planned low grade ore which is typically designated for the dump leach.
In summary, in Q1 we mined planned low grade material as well as additional Waste to ore conversion that went to the dum