EY Americas Mining and Metals Centre of Excellence Advisors



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EY - Alex Teijeira

Alex Teijeira

Talent strategy & management, employment and labour relations

Alex is an executive global leader in human resources, communications and law with extensive experience across the mining, banking and product sectors. With a focus on employment and labour relations, he has 20+ years of experience in HR, offering deep knowledge in organization productivity, innovation and performance. To foster exceptional people engagement and culture, Alex adopts a transformative approach to encourage growth and boost potential. 


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EY - Beatriz Orrantia

Beatriz Orrantia

ESG and government relations

Beatriz is an experienced leader in the mining and metals space, where she focuses on sustainability and governance matters with vast experience in the Latin American region. She currently serves as a board member for publicly traded companies in the mining industry. Beatriz is an experienced lawyer with skills in M&A, initial public offerings, corporate governance and regulatory compliance, with experience in mining matters such as options agreements and joint ventures.


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EY - Chih-Ting Lo

Chih-Ting Lo

ESG and decarbonization

Chih-Ting is a strategist, board member and entrepreneur who’s committed to making a global net-zero carbon future a reality by focusing on industry decarbonization. A professional engineer with deep sector knowledge in environmental, social and governance (ESG) performance, Chih-Ting brings a data-driven approach that complements governance leading practices and overseeing risks. She is collaborative, deliberate and authentic in her interactions with board members and executive teams.


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EY - Don Duval

Don Duval

Innovation and transformation

Don has spent more than two decades leading, growing and transforming organizations and businesses, working with multinational companies, tech startups, academic and research institutions, governments and clients around the world. As CEO of NORCAT, he has transformed the organization to become a global, multifaceted enterprise focused on providing programs, services and resources to prepare current and future workers and tech entrepreneurs with the skills, competencies and confidence to succeed. In addition, Don is the founder and co-managing partner of the Sudbury Catalyst Fund, a unique $5m co-investment seed capital venture fund based in Sudbury, Ontario. ​


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EY - Doug Stretton

Doug Stretton

Asset management and maintenance

Doug is an accomplished and recognized professional with 30+ years of experience in industries including mining, steel, oil and gas, food and manufacturing in local, national and international markets (US, Australia, South Korea, Japan, UK, Egypt, Peru, Chile, Argentina and Tanzania). He has a solid track record in cost reduction and business performance improvement.


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Elena Mayer

ESG, Diversity & Inclusion

Elena is a people-focused business professional with deep industry knowledge and experience in equity, diversity and inclusion. As a founder of Women Who Rock, she has been at forefront of the industry’s efforts to attract and retain the next generation of mining professionals. As a D&I mining professional, she has advised mining companies on strategy, change management and training programs. For her contributions she was named one of the Top 100 Global Inspirational Women in Mining by Women in Mining UK.


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EY - Joe Ashun

Joe Ashun

Asset management and maintenance

Joseph is an accomplished maintenance systems and reliability engineer with a focus on physical assets. With over 30 years of experience in mining, marine, oil and gas, and manufacturing, Joseph is a recognized professional with deep knowledge in engineering maintenance, systems implementation and supply chain business processes.


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EY - John Lindsay

John Lindsay

Capital projects

John is a metallurgical engineer with over 38 years of experience in operations, consulting engineering, and EPCM contracting. John is experienced in a broad range of commodities and has strong technical knowledge in mineral extraction.


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EY - Kenneth Roberts

Kenneth Roberts

Mineral processing 

Ken has over 35 years of experience in the mineral processing industry across a wide range of minerals, including nepheline syenite, mineral sands, and base and precious metals.  He has deep experience in process optimization, troubleshooting and debottlenecking in a wide range of treatment processes from wet to dry. 


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EY - Lorelei Ratushniak

Lorelei Ratushniak

Innovation and technology 

Lorelei's background is in executive business development, strategic partnership engagement and innovation strategy consulting. She has worked as a regional and international business development manager for engineering companies, mining supply companies, and tier-one transportation solution companies. Lorelei is passionate about facilitating innovation partnerships and educating mine end users and non-traditional mine stakeholders on the vital role mining plays in economic growth and achieving a low-carbon economy.​ 


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EY - Mary Ann Baynton

Mary Ann Baynton

Psychological health and safety 

Mary Ann is an advocate for mental health issues and is experienced in leadership related to psychological health and safety in the workplace. She supports employers, governments, organizations, unions, teams and associations that wish to resolve workplace issues involving mental health, psychological safety and conflict or performance concerns. Mary’s passion to raise awareness of mental health issues has led her to be a catalyst in the field.​​ 


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EY - Patricia Jaworski

Patricia Jaworski

Maintenance and reliability 

Patricia is an enthusiastic, knowledgeable and skilled Maintenance and Reliability professional. Her formal engineering training and more than 15 years of boots-on-the-ground industry experience enable her to translate theory into practical implementation for clients. 

When out of the office or offsite, Patricia is a lifelong competitive athlete and has represented Canada on the world stage in three sports. She brings that team-first attitude and drive to succeed to all aspects of her professional life. She relishes tackling challenges with clients and she continually seeks out further actionable improvement opportunities.​​ 


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EY - Paul Yaroshak

Paul Yaroshak

Digital transformation and process control 

Paul is a results-focused engineer with extensive international mining experience. Paul analyzes business and physical processes to uncover opportunities for improvement, employing proven technologies to implement robust approaches. He helps organizations align solutions with business strategy,  and is technically adept with a history of finding creative approaches to technically challenging issues.​​


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EY - Robert Allard

Robert Allard

Procurement and supply chain 

Robert is a results-driven procurement and supply chain management professional with 30+ years of hands-on and senior management experience in mining and other capital-intensive industries. He is experienced in both projects and operations, providing strategic sourcing, streamlining sourcing process, procurement, contracting and logistics process, as well as cost-reduction programs.


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EY - Sean McCarthy

Sean McCarthy

Mining engineering and operations excellence 

Sean is an accomplished mining engineer with extensive experience in mine planning and optimization, mine construction and expansion, and operationalizing technology. With over 25 years of experience, Sean has led technical teams through all stages of mine life, from construction and ramp-up to production through mine closure.


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EY - Trevor Kelly

Trevor Kelly

Mine engineering and operations excellence 

Trevor has 25+ years of international open pit and underground mining experience, focusing on technical service, operational execution and asset optimization. He has a passion for operations excellence and helping the mining industry reach its potential through the adoption of transformational mining and industrial technologies.



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