Engineering & Mining Journal

SEP 2018

Engineering and Mining Journal - Whether the market is copper, gold, nickel, iron ore, lead/zinc, PGM, diamonds or other commodities, E&MJ takes the lead in projecting trends, following development and reporting on the most efficient operating pr

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SEPTEMBER 2018 • E&MJ 1 www.e-mj.com SEPTEMBER 2018 • VOL 219 • NUMBER 9 FEATURES The New Standard of Customizable Rigs The latest rotary blasthole drill solutions promise optimized production on rigs configured for specific site, fleet and staffing needs .......................... 32 Matching Method to Orebody Two narrow-vein project experts reveal when the mechanized raise-climber mining method is more efficient than the long hole open-stope mining method, and when it is not............................................................................. 40 Reducing Dilution With Narrow-vein Mining A plan that considers drive size, blast design and quality control provides the best results .............................................................................................. 42 Don't Let Tailings Management Slide As technology advances to handle increasing volumes of tailings, experts recommend periodic reviews of TSF operations and options to maintain efficiency and safety ...................................................................................... 46 Peace at Last Eritrea and Ethiopia have ended one of Africa's longest and bitterest conflicts, opening the Horn of Africa to new mining possibilities ................... 52 LEADING DEVELOPMENTS Quellaveco Project Gets Go-ahead.....................................................................4 Lundin Mining Initiates Takeover Bid of Nevsun ................................................4 First Quantum Reports Record Quarterly Copper Sales .....................................5 Glencore Brings More Base Metals to Market ....................................................5 Jaguar Mining Gives Update on Operating Progress .........................................5 Rio Tinto Opens New Diamond Pipe at Diavik ....................................................5 Leagold Implements Optimization Plans ..........................................................6 AROUND THE WORLD U.S. & Canada: Donlin Gold Project Receives ROD, Major Federal Permits ........8 Latin America: Escondida Signs New Collective Bargaining Agreement ........ 16 Australia/Oceania: Rio Tinto Begins Work on First 'Intelligent Mine' .............. 20 Africa: DRC: New Mining Industry Body Forms to Focus on Mining Code Improvement ......................................................................................... 22 Asia: HCL to Expand Copper Production ......................................................... 24 Exploration Roundup: Rio Tinto Earning Into Sipa's Uganda Exploration Project ......................................................................................... 26 This month, E&MJ reviews rotary blasthole drills, which are reportedly safer, more efficient and require less maintenance than previous models. On the cover, the Sandvik DR416i, which will debut in Q4 2018. This rig will have the longest single-pass mast in its class (21 m) and be capable of drilling holes up to 406 mm or 16 in. (Photo: Sandvik) DEPARTMENTS Calendar ...................................................... 30 Classifi ed Advertisements ............................ 70 Equipment Gallery ........................................ 66 From the Editor................................................2 Markets ........................................................ 72 Operating Strategies .................................... 56 People .......................................................... 12 Processing Solutions .................................... 64 Suppliers Report........................................... 60 This Month in Coal ....................................... 28 Blasthole Drills....32 Tailings Management....46 Horn of Africa....52

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