Technical Advisors

The Technical Advisory Committee (“TAC”) will look to provide impartial advice and peer review. The Committee will help identify risks and opportunities working closely with Bluestone management and consultants on material technical aspects of the project.

Alf Hills (Chair)

Mr. Hills is registered as a Professional Engineer in the Province of British Columbia and holds a degree in Mining and Mineral Process Engineering with over 40 years of international mine evaluation, development, start-up operations, general management and board experience. Mr. Hills spent 26 years of his career with Placer Dome Inc, where he held a number of positions including Vice President Evaluations, Mine General Manager at Placer’s Australian Kidston Gold Mine and in Papua New Guinea in various construction, start-up and operating positions. Mr. Hills also participated in developing the CIM Best Practice guidelines for Mineral Resource and Mineral Reserve Estimation and was a corporate member of the SME Resources and Reserve Committee.

Scott Donald

Mr. Donald is a Principal and Senior Hydrogeologist with Golder Associates and a specialist in numerical, analytical and statistical analysis of hydrogeological processes.  He has over 25 years of experience applying numerical and analytical techniques to the solution of groundwater flow over a wide range of projects including extraction and re-injection studies.  Over the past 20 years these skills have been primarily applied to the mining industry where he has directed or played a leading role in assessing potential hydrologic and hydrogeologic impacts and issues related to the development of new mines or in the mine closure process.

Mr. Donald has represented the hydrogeological and/or groundwater modeling component of the work at public hearings and/or through expert review panels as part of the formal review process.

Allan Moss

Mr. Moss has over 40 years of experience in mining and geo-technical engineering. After spending 20 years working as a Principal at SRK and Golder Associates he worked for Rio Tinto including as Principal Consultant Manager, General Manager Copper Technology, and General Manager Underground Technology.  Over the last 20 years Allan has been heavily involved in large underground mines, from design through implementation to operations as well as a number of smaller underground operations. Mr. Moss is currently President of Sonal Mining Technology providing advisory services to underground bulk mining operations and has served on a number of technical review boards for many of industry’s senior firms.  He also assists in strategic and technical risk reviews of both brownfield and greenfield projects.

Roger Nendick

Mr. Nendick has more than 40 years of operating and engineering experience in the mining industry.  His most recent assignment was Project Director for the Udokan Copper Project in Siberia, Russia.  Prior to that he was Project Director for the Ambatovy Project in Madagascar for Sherritt International.  Mr. Nendick currently acts as a consultant to Lundin Mining, Filo Mining and NGEx.  He has experience as a Project director for major Feasibility Studies and in Front End Project Development.  As Vice-President, Technology and Operations for Fluor Mining and Minerals, he was involved as sponsor or technology specialist in a number of recent engineering and construction projects including the Glamis Marlin mine in Guatemala.  During the course of his career he has led due diligence and consulting assignments for the project financing of mining operations.

Robert Sim

Mr. Sim is a senior resource consultant with more than 30 years of experience in mineral exploration, mine operations management, project evaluations, resource audits, geostatistical studies, feasibility studies, QA/QC programs, conditional simulation studies, and mineral resource evaluations and modelling. Considerable experience across surface and underground deposits, including base metal, gold, silver, uranium, oil sands, cobalt, coal and phosphate deposits in Canada, the United States, Central and South America, Europe, Asia, Africa and Australia.

Mr. Sim worked for Inmet Mining Corporation as Chief Geologist at the Winston Lake Mine, Ontario, Canada; Pend Oreille Mine, Washington State, USA; Çayeli Bak?r ??letmeleri (ÇB?), Turkey; and as Senior Geologist, Resource Evaluations.

Robert founded SIM Geological in 2004, which conducts independent mineral resource evaluations, modelling, and governance, and provides reporting that is compliant with National Instrument 43-101 standards.

Ward Wilson

Dr. Ward Wilson is a Professor of Geotechnical and Geoenvironmental Engineering at the University of Alberta and brings more than 30 years of industrial experience to his practice in advance mine waste management.  He has extensive experience as a consulting engineer and has maintained an exceptionally strong industrial focus through his research programs.  Dr. Wilson is involved in mine waste management systems at numerous mine sites worldwide.  He has also served as a specialist review consultant for many larger international mining projects.

Dr. Wilson’s academic interest lies in technologies that improve the physical and chemical stability of tailing and waste rock systems.  These methods focus on the de-watering of tailing to produce thickened, paste and filtered tailing to eliminate the need for conventional tailing ponds and allow the construction of dry stacks.  He is involved in several innovative research programs for the blending of tailing and waste rock to produce a high strength sealing material termed ‘Paste Rock’.

Professor Wilson is currently the NSERC/COSIA Industrial Research Chair in Oil Sands Tailing Geotechnique at the University of Alberta.


Dave Gunning
Underground Mining Advisor

Mr. Gunning is a graduate of Mining Engineering from the University of British Columbia (1983) and a practicing Professional Engineer since 1989. Mr. Gunning has over 35 years of operational experience in underground mining, processing, and exploration in Guatemala, Mexico, Mongolia, Canada, and the United States. From 2017 until 2020 Mr. Gunning acted as VP Operations for Bluestone Resources Inc. where he worked to progress the Cerro Blanco project in Guatemala. From 2009 until 2017 Mr. Gunning acted as Chief Operating Officer and Director of Starcore International Mines during which time he was responsible for all aspects of the San Martin gold mine located in central Mexico. During his tenure at Starcore the company developed many successful strategies to aid the nearby community while improving the environmental footprint of the operation.

Allison Rippin-Armstrong
Corporate Social Responsibility Advisor

  • Environmental Scientist with over 20 years of experience
  • Former Vice President, Sustainability of Kaminak Gold where she led the company’s permitting and CSR programs; similar roles at BHP Billiton and Argonaut Gold