The Namdini has many characteristics typical of mesothermal Birimian gold deposits.

The Namdini gold deposit is a large, structurally controlled, orogenic gold deposit within the Nangodi Greenstone Belt, with numerous features similar to deposits found elsewhere in late Proterozoic Birimian terranes of West Africa. To date the Namdini gold deposit has been delineated over a strike length of 1.15 km, up to 300 m wide and 700 m deep.

The rock types comprising the Namdini Gold Project included a steeply west dipping Birimian sequence of interbedded, foliated, metasedimentary and metavolcanic units which have been intruded by a medium-grained granitoid and diorite. The southern part of the Project is covered by flat-lying Voltaian Basin clastic sedimentary rocks that have been deposited unconformably on the Birimian sequence and postdate mineralization and the host sequence.

Underneath the weathering profile, the Birimian units include metasedimentary, metavolcanic, granitoid (tonalite) and diorite. The metasedimentary and volcaniclastic lithologies have been intensely altered with a resulting pyrite-carbonate-muscovite-chlorite-quartz assemblage. Alteration is most prevalent in the volcaniclastic units. Similarly, the tonalite is extensively altered and has been overprinted by silica-sericitecarbonate assemblages.

In all rock types, the mineralization is accompanied by visible disseminated sulfides of pyrite and very minor arsenopyrite ........

Mining will comprise a conventional hydraulic shovel operation typically using 400 t class excavators in backhoe configuration for mining ore and face-shovel configuration for mining waste. Rigid body Cat 785 (134 t) class dump trucks will be used for hauling ore and waste on designed access roads. An auxiliary mining fleet of dozers, graders, water carts and utility vehicles will support the mining operation.

Mining will be carried out using staged cut-backs with five identified Phases incorporated within the LOM Final Pit. The mining schedule defines movement of ore and waste on 10 m mining benches, by year, for each of the Phases. It is proposed to mine three flitches in the ore (allowing for blast heave), within 10 m benches.

Road width was based on 3.5 times the largest envisaged size truck width, plus an allowance for the high wall drain (culvert) and the low wall safety berm. The road was designed at 30 m overall width including an allowance of 4 m for the safety berm that should be a minimum of half the height of the wheel for the haul truck (0.5 times 3.1 m, so about 1.5 m high).

The Namdini Project will be mined on an outsourced contract.

The maximum peak fleet requirements for the Namdini Project are shown in Table 146 with an expected maximum 27 (134 t capacity) rigid haul trucks and four shovels, three in face shovel configuration and 1 in backhoe configuration.

The mine design for the Namdini Gold Project co ........

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