John Durr Mining Engineer
Professional Summary Mr. Durr has over 25 years of mining operations experience in international precious metals and base metals mining operations. He has worked at open pit and underground operations in the United States, Colombia, Peru, Bolivia, Honduras, Guatemala, Mexico and Papua New Guinea. John specializes in short and long range mine planning, open pit and underground ore reserve estimation, mine and mill maintenance, and operational improvement and debottlenecking. Representative Experience San Ramon Mine, Red Eagle Mining, Colombia – Managed all operations and site administration for a new, remote, narrow vein, overhand narrow vein cut and fill, ramp accessed underground gold mine with contractor mining and a conventional CIL mill with sulfide flotation-regrind with 550 employees. Mercedes, Yamana Gold, Mexico – Managed all operations, administration, security, community and government relations, local exploration for a new, remote, high grade narrow vein 2,000 tpd long hole ramp accessed underground gold mine with first of its kind Modular UG Dispatch System, paste backfill and 3 stage crushing, ball mill, dynamic leaching and gravity circuit, Merrill-Crowe recovery mill, producing 140KOz Au per year in northwest Sierra Madre Mountains. Palmarejo Mine, Coeur, Mexico – Managed all mining, maintenance, processing, mine planning, geology, local exploration, budgeting, training, tails dam construction, safety activities for a very remote 60K tpd 777/992 high grade narrow vein open pit, 2K tpd long hole ramp accessed underground silver-gold mine with a 6K tpd SAG mill with flotation, intensive concentrate leaching, CIL, Anglo strip circuit, mixed EW/Merrill-Crowe mill producing 10MOz Ag and 125KOz Au per year. Minera San Cristobal, Sumitomo, Bolivia – Managed all mining, maintenance, mine planning, geology, budgeting, training, safety activities for a 200,000 tpd open pit lead- zinc-silver mine in Bolivian altiplano with 50,000 tpd sulfide concentrator. Hope Bay, Newmont, Canada – Evaluated prefeasibility development options for this large arctic gold resource. Emphasis on evaluation of mine planning, sampling, resource modeling, resource estimation, mine equipment selection and mine operating cost estimating. Conga Project, Newmont, Peru – Completed mine plan and operating plan review of the project that identified significant amount of duplicate works and cost estimates in the project prefeasibility study. Independently complete a project benchmarking study against major world copper projects. Marlin Mine, Goldcorp/Glamis, Guatemala – Managed 30K tpd CAT 992 based open pit and 2K tpd underground mechanized under hand cut and fill mine operations feeding a 5.5K tpd oxide dynamic leach/Merrill-Crowe mill with a gravity circuit in the remote northwest mountains of Guatemala. San Martin Mine, Goldcorp/Glamis, Honduras - Managed heap leach operations, ADR plant operations and maintenance and metallurgical laboratory producing 120,000 Au
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ounces per year with a 25Ktpd single stage crushing / agglomeration / radial stacker plant. Yanacocha, Newmont, Peru – Completed La Quinua (14Moz Au) pit design, life of mine plan, detailed dump, haul road and drainage design, mine development plan. Supervise the Geotechnical and Hydrology Group of four engineers and managed Yanacocha, Maqui Maqui and La Quinua deposit dewatering studies and infrastructure installation. Toquepala Mine, Southern Peru Copper, Peru – Integrated and managed production planning, monthly production forecasts and production reporting, budgeting and cost reporting for all production units and product sales for two large open pit copper mines, concentrators, SX-EW plant, smelter, refinery, acid plant and railroad. Carlin North Area, Newmont, Nevada – Completed quarterly long term mine plans for Newmont’s Carlin North Area open pit mines and managed Newmont’s interests in the Betze Post Deposit operated by Barrick. Rand Mine, Glamis Gold, California – Resource modeling and reserves estimation, long term mine planning, short term planning, ore control, geology and supervise drilling and blasting operations. Bald Mountain Mine, Placer Dome, Nevada – Ore reserve estimation, long term mine planning, Mine Foreman, mine operations.
Employment History Mine Technical Services, Associate, 2018 to present Red Eagle Mining, General Manager, San Ramon Mine, 2017 to 2018 Yamana Gold, General Manager, Mercedes Mine, 2012 to 2013 Coeur Mexicana, Operations Manager, Palmarejo Mine, 2011 to 2012 Sumitomo, Mine Manager, Minera San Cristobal, 2010 to 2011 John Durr Mining Consulting, 2008 to 2010 Goldcorp/Glamis, Mining Manager, Marlin Mine, 2006 to 2007 Goldcorp/Glamis, Process Manager, San Martin Mine, 2004 to 2005 Goldcorp/Glamis, Mine Manager, Marlin Mine, 2002 to 2004 Newmont, Senior Mine Engineer, Yanacocha Mine, 1999 to 2001 Southern Peru Copper, Chief Engineer, Toquepala Mine, 1996 to 1999 Newmont, Senior Mine Planning Engineer, Carlin North Area Mines, 1993 to 1996 Glamis Gold, Senior Engineer, Rand Mine, 1991 to 1993 Placer Dome, Mine Engineer, Bald Mountain Mine, 1988 to 1991
Education B.Sc., Mining Engineering, Colorado School of Mines, 1988
Skills Fully Bilingual: Spanish - English
Professional Affiliations PE, Mining, Nevada PE, Mining, Arizona Society of Mining Metallurgy and Exploration (SME), Registered Member Australian Institute of Mining and Metallurgy (AusIMM), Fellow
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