Modern Mining September 2021

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CONTENTS

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ARTICLES COVER STORY 10 Transforming truck-and-shovel mining COPPER 14 Towards steady-state design performance GRAPHITE 18 Commissioning of Vatomina quadruples Tirupati’s production in Madagascar SHAFT SINKING, RAISEBORING AND UNDERGROUND DEVELOPMENT 22 UMS gears up for shaft sinking at Karowe Mine REGIONAL FOCUS – WEST AFRICA 24 Outstanding drilling results showcase West Africa’s gold haven status DECARBONISATION 30 Development of zero-emission mining trucks gathers pace 34 Liebherr Mining advances Zero Emission Programme BULK MATERIAL HANDLING 38 Engineered flow aids resolve bulk material handling issues WATER TREATMENT 42 Sand treatment with spin cycle

MINING NEWS 4 Global diamond production to grow by 1,4% in 2021 4 High grade results from Phase 2 drilling at West Kenya 5 2022 Investing in African Mining Indaba to be held in May 5 Spotlight on renewable energy for mining projects at JMP 2021 6 ALROSA signs MoU with DRC diamond mining company 6 Uis Tin Mine exceeds production targets for the third consecutive quarter 7 Maiden Indicated Mineral Resources for K.Hill manganese project 7 BlueRock sells three large diamonds for US$1,1-million 8 Exxaro commended for sustainability reporting with top global award 8 DRDGOLD’s FWGR converts to closed circuit slimes milling SUPPLY CHAIN NEWS 43 Sustainability focus in various Multotec initiatives 43 Sandvik adds RC sampling capability to Leopard DI650i drill rig 44 Orica’s 4D bulk explosives system optimises productivity 44 Engineering know-how puts Weba up front 45 Quality, custom rubber hoses from Weir Minerals Africa’s Alrode facility 46 Underground jib crane to recover spilled ore 46 ERG upgrades fleet with specialised heavy-duty Hitachi equipment 47 Optimising mill circuits for best efficiency impact 47 IMDEX data goes 3D with US$20-million MinePortal acquisition EXPERT VIEW 48 Mining opportunities in SADC will favour those in the know

ON THE COVER While truck-and-shovel systems have been the mainstay of open-pit mines for a long time, the same inefficiency and safety issues they are renowned for remain. The answer lies in MMD Group’s new Fully Mobile Surge Loader – a truly mobile and intelligent feeder designed to tackle intermittent loading, and make truck-and-shovel operations more efficient and safer than ever before. See story on page 10.

September 2021  MODERN MINING  1