Pekka Bergström Senior Geotechnical Consultant Education GradCert.Eng in Mine Design & Planning, West Australian School of Mines, Australia MSc in Geology and Mineralogy, Oulu University, Finland Diploma in Mining and Quarrying. Lappeenranta Technical College, Finland Professional Memberships Member of Finnish Association of Mining and Metallurgical Engineers (Vuorimiesyhdistys ry) Member of Finnish Mining and Quarrying Association (Vuoriteknikot ry) Finnish National Group of ISRM Specialisation: Geotechnical risk management; open pit and underground geotechnical monitoring system design; installation and data interpretation; ground support design; underground design; drill and blast design; operations support; seismic monitoring. Expertise: Pekka Bergström is a Senior Geomechanics Engineer with over 20 years experience in hard rock mining industry (open pit & underground) including over 10 year experience working in deep high stress mines in Finland and in Australia. He holds Graduate Certificate Engineering in Mine Design and Planning as well as MSc in geology and Mineralogy and diploma in mining and quarrying. After first working as Mine Geologist at the Tara Mines in Ireland, he held several different positions as a Mine geologist, Mining Engineer and Geotechnical Engineer in Australia. He worked as a Geotechnical Engineer in several deep high stress mines in Broken Hill, NSW and Kalgoorlie, WA. During the most recent 3 years, Pekka has worked as a Senior Geotechnical Engineer at the Pyhäsalmi Mine, Finland. Pekka Bergström joined SRK in February 2015. This experience has involved specialisation in mine operations support, ground support designs, underground mine design, seismic monitoring and seismic hazard management, geotechnical monitoring systems design and installation and drill and blast designs in underground / open pit hard rock mines. Pekka s specialisation includes in mine operations support, ground support designs, underground mine design, seismic monitoring and seismic hazard management, geotechnical monitoring systems design and installation and drill and blast designs in underground / open pit hard rock mines. Employment Record: 2015 - Senior Geotechnical Consultant, SRK Consulting (Finland) Oy, Finland 2011-2015 Senior Geotechnical Engineer, First Quantum Minerals LTD Pyhäsalmi Mine, Finland 2010-2011 Senior Geotechnical Engineer, Barrick Kanowna Raleigh Mine, Australia 2008-2010 Geotechnical Engineer, Barrick Kanowna Raleigh Mine, Australia 2007-2008 Geotechnical Engineer, Perilya Broken Hill Pty Ltd Broken Hill Mine, Australia 2004-2007 Geotechnical Engineer, Kalgoorlie Consolidated Gold Mine Fimiston Open Pit, Australia 2003-2004 Voids Technical Officer, Kalgoorlie Consolidated Gold Mine Fimiston Open Pit, Australia Page 1 of 5
1999 2003 1998 1999 1995 1998 Drill and Blast Engineer, MPI Mines Black Swan Nickel Mine, Australia Mine Geologist, Outokumpu Mining Australia Pty LtD Forrestania Nickel Mine, Australia Mine Geologist, Outokumpu Tara Mines Ltd Tara Mine, Ireland Specialised Software Skills: IMS Seismic software (IMS) MAP3D (MINCAD Systems) GroundProbe Radar Software Vulcan (Maptek) Surpac (Gemcom) Phases 2 (Rocscience Inc.) SWedge (Rocscience Inc.) AdamTECH (Adam technologies) UnWedge (Rocscience Inc.) Sirovision (CAE Mining) DIPS (Rocscience Inc.) UnWedge (Rocscience Inc.) Rockfall (Rocscience Inc.) MS-RAP (ACG) Mine Monitor (Mine Design technologies) Languages: Finnish (Native); English (Fluent); Swedish (Basic understanding); Spanish (Basic understanding) Publication: Bergström, P., Sahala, K., Hakala, M. (2014) From high stress to destressed mining in changing conditions. Proceedings of the Seventh International Conference on Deep and High Stress Mining, Sudbury, Canada Industry Experience (Selected): First Quantum Minerals LTD, Pyhäsalmi Mine, Finland 2011 2015 Role: Senior Geotechncial Engineer. Responsible for rock mechanics of 1.4Mtpa underground operation. Geotechnical management and support to underground operation and mine planning. Ground support design and scheduling and ground support quality control. Seismic system management and development for high stress, high seismic risk deep underground mine. Seismic data analysis and seismic risk management. Open pit and underground geotechnical inspections. Design and implement geotechnical monitoring programs as required (seismic monitoring, wireless extensometer monitoring). Stope designs and stope stability assessments for open stope underground operation. Interaction with Mine Planning Engineers regarding mine design and scheduling and production. Provide ground awareness training to Underground Personnel, inclusive of major seismic event and fall of ground presentations. Design and implementation of ground damage mapping system. Geotechnical shaft inspections. Barrick Kanowna, Raleigh Gold Mine, Australia 2010 2011 Role: Senior Geotechnical Engineer. Responsible for rock mechanics of small narrow vein underground operation. Geotechnical management and support to underground operation and mine planning. Ensure awareness of all ground control issues and effectively communicate with production personnel and technical staff. Regular site inspection, as required by the ground control management plan. Design, implement and maintain the site ground control management plan and setting ground control standards in accordance with the site requirement, industry and regional standards. Ensure that quality control as stipulated by the sites ground control management plan is undertaken (support, support installation, support performance). Seismic system data collection, seismic system management, seismic system upgrade and management of seismic system expansion. Page 2 of 5
Follow up on all ground control reports (FOG, damage, seismic activity) and provide adequate feedback to production personnel and technical staff. Seismic emergency procedure development. Ground support design and scheduling manage and optimise ground support layout designs and support standards across the site. Undertake and interpret geotechnical data collection. Management and scheduling of the site scaling program. Regular geotechnical open pit inspections. Prepare and present ground awareness sessions. Supervision and training for Geotechnical Engineer. Barrick Kanowna, Kanowna Belle Gold Mine, Australia 2008 2010 Role: Geotechnical Engineer. Responsible for rock mechanics with other Geotechnical Engineers of 1.4MPa underground operation. Advice and provide consultative services on geotechnical issues. Process and interpret seismic data and efficiently present results to production personnel and staff. Seismic system management (maintenance and upgrade). Site geotechnical inspection as required by the ground control management plan. Ground support quality control management. Follow up on all ground control report and provide adequate feedback for all personnel. Manage the site scaling programme. Manage and undertake geotechnical core logging and core logging validation. Manage and update MS-RAP (mine seismicity risk analysis) program. Manage, update and interpret data from geotechnical database (geotechnical mapping; ground support quality control; stope design and reconciliation; damage reports; incident reporting). Design and document rehabilitation and ground support memorandums as required from inspections. Supervision and training for Graduate Geotechnical Engineer. Undertake open pit geotechnical inspections. Perilya Broken Hill Pty Ltd, Perilya Mine, Australia 2007 2008 Role: Geotechnical Engineer. Responsible for rock mechanics with other Geotechnical Engineers of 3 different underground operations. Advice and provide consultative services to Technical Services and Mine Departments on geotechnical issues. Ground support design, quality monitoring, and performance in deep mine excavations Design and installation of ground monitoring systems including micro seismic, extensometers, prism monitoring, smart cables. Geotechnical/geological mapping to input into rock mass domain modelling, ground support design of excavations. Provide ground awareness training to Underground Personnel, inclusive of major seismic event and fall of ground presentations. Regular shaft geotechnical inspections. Working with production staff and consultants to ensure ground support is planned, designed and installed in timely and appropriate matter. Collect rock mass geotechnical data from the underground mines. Geotechnical inspections of the open pits and underground mines. Operate and maintain mine geotechnical monitoring systems such as seismic monitoring system. Monitoring and installation of mechanical extensometers. Micro seismic system management and data interpretation. Seismic risk management. Document and analyse seismic activity with respect to mining. Accident / Incident inspections (geotechnical issues). Stope stability analysis. Page 3 of 5
Prepare and issue ground control designs (ground support) to facilitate safe mining conditions. Kalgoorlie Consolidated Gold Mines, Fimiston Open Pit, Australia 2003 2007 Role: Geotechnical Engineer & Voids Technical Officer. Responsible for rock mechanics with other Geotechnical Engineers of 85MPa open pit operation Encouraging and enforcing a safe working environment in the open pit relation to old underground workings. Advice and provide consultative services to Technical Services and Mine Departments on geotechnical issues. Ground support design, scheduling and supervising (contractor). Working with production staff, contractors and consultants to ensure slope ground support is planned, designed and installed in a timely and appropriate manner. Geotechnical mapping and core logging. Geotechnical inspections. Presplit drilling and blasting quality control and monitoring. Management of prims monitoring system (ATS). Monitoring and installation of electronical and mechanical extensometers. Ground water monitoring. Micro seismic system (ISS) management and data interpretation. Assistance of Mt Charlotte Mine (underground operation) Geotechnical Engineer when required. Utilised and applied GroundProbe slope stability radar monitoring systems as well implementing slope failure alarms after domain and trigger based slope failure back analysis. Rock fall trials and analysis. Working with production personnel to ensure that batter clean ups are done in timely and safe manner. Subsidence notification and investigations. Access permission for equipment and personnel relation to old underground workings. Probe drilling designs to detect old underground workings. Deep blasting designs for old underground workings. CALS cavity3d surveys and data handling. MPI Mines, Black Swan Nickel Mines, Australia 1999 2003 Role: Drill and Blast Engineer. Blast hole drilling and charging designs (long hole open stoping). Co-ordinating underground drill and blast operations with the contractors. Cable bolting designs. Working with geotechnical staff and consultants to ensure stope ground support is planned, designed and installed in a timely, safe and appropriate manner. Development a geotechnical program for Cygnet ore body (new ore body) by assessing ground conditions in underground openings using geotechnical mapping and core logging. Underground geotechnical mapping. Underground mine layout designs (stopes & development). Monthly reports of drill and blast and geotechnical activity. Stope production scheduling. Outokumpu Mining Australia Pty LTD, Forrestania Nickel Mines, Australia 1998 1999 Role: Drill and Blast Engineer and Mine Geologist Blast hole drilling and charging designs (long hole open stoping). OMS Logg (geophysics) measurement, calibration and data handling. Geological interpretation of OMS Logg geophysical data. Percussion sample drilling planning and sampling. Underground geological and geotechnical mapping and core logging. Stope production scheduling and monthly production reporting. Page 4 of 5
Outokumpu Tara Mines Ltd, Tara Mines, Ireland 1995 1998 Role: Mine Geologist Installation of the OMS Logg geophysical system to the mine and training employees (use and maintenance). OMS Logg measurements, calibration and data handling. EMS (drill hole dip and direction indicator) measurements. Production diamond drilling designs, core logging and sampling. Exploration diamond drilling core logging. Reserve calculations Underground inspections and geological / geotechnical mapping. Geological interpretation for mine planning. Page 5 of 5