The Sukari felsic porphyry outcrop is located in an easterly dipping sequence of andesite flows, serpentinites and associated volcanoclastic sediments, mainly tuffs and epiclastics. It strikes for 2.3km and is 100 to 600m thick. It forms a jagged-toothed, strong topographic high up to 250m above wadi level.

The host to gold mineralisation is the Sukari felsic porphyry unit that contains a variable series of sub-units ranging from minor acid and felsic rhyolite and dacite to coarser grained feldspar and quartz porphyries, quartz diorites and granodiorites, dipping from moderate east in the south, through sub-vertical to slightly overturned “hangingwall” contact in the north.

Ore and waste are mined using conventional open pit mining methods. The operation utilises selective mining techniques to separate ore and waste. Provision has been made for drilling and blasting all primary and oxide materials.

• Mechanised mining: a combination of open and sub level stoping over widths 3.5 to 10m

• Average stope grades 5-18g/t, depending on structural setting (2 sub-parallel controlling structures)

• Current resource/reserve limited to southern ‘Amun’ region and c.400m below surface

The process plant design comprises coarse ore stockpile, milling and CIL circuits relocated from Kori Kollo combined with a new primary crusher, a new flotation, regrind and concentrate CIL circuit and new elution/gold room facilities for each of the CIL circuits.

There will be two separate gold room facilities associated with each Zadra elution circuit each comprising electrowinning cells and smelting furnace. The reasons for separating these facilities are the significant differential in required carbon handling capacity through each circuit and the security risk in transporting loaded carbon or cathodes.

Because the plant throughput is limited by SAG milling capacity, provision has been made in the design for possible future inclusion of a second SAG mill. Allowance has also been made for future retro fit of a gravity circuit.