Leadership

Andrew Lye

Andrew Lye

Project Director

Andrew leads the Resolution Copper team and its work to plan and permit a safe, environmentally sensitive mine. Before he came to Resolution Copper, Andrew led the La Granja copper project in Peru. He has led operational and technical teams across the globe, working in Peru, Madagascar and Australia. He has a bachelor of science in Geology and Geomorphology from Macquarie University. He has been with Rio Tinto since 2000.

Damian Sherlock

Damian Sherlock

General Manager, Studies

Damian is a Mechanical Engineer and mining professional with more than 20 years of experience in open cut and underground mining operations. He has held operational, corporate and project delivery roles. His expertise includes reliability engineering and maintenance management, turnaround management, procurement, business improvement, study and construction management. He has worked on several large mine development projects for Rio Tinto, including as Construction Manager for the Kestrel Mine Extension in Central Queensland, Australia and as Study Lead for the No. 9 Shaft feasibility study for Resolution Copper.

Sterling Hundley

Sterling Hundley

Financial Operations Officer

Sterling oversees Resolution Copper’s financial planning, reporting, accounting, treasury and other commercial aspects of the business. He has been with Resolution Copper since 2006 and has over three decades of finance experience, including 16 years in the oil & gas industry with ConocoPhillips where he led financial reporting activities for the company’s Risk Management and Remediation team. Sterling is a certified public accountant and holds a Bachelor of Science in Finance from Arizona State University.

Hesston Klenk

Hesston Klenk

Senior Manager for Communities and Social Performance

Hesston is the Senior Manager for Communities and Social Performance. He leads its work to plan and permit a safe, environmentally sensitive mine. In this role he oversees local and Tribal outreach beyond the spectrum mining to promote community partnership. Before coming to Resolution Copper, Hesston led project controls at Kennecott Utah Copper’s underground projects. He has led procurement and project services work in several countries across the globe, working in Peru, Chile, and Australia. Hesston has a Bachelor’s of Art in Political Studies and Business Management from Westminster College in Salt Lake City and has been with Rio Tinto since 2003.

Willard Antone III

Willard Antone III

Senior Manager Permitting, Approvals and Cultural Heritage

Willard Antone III is a member of the Gila River Indian Community and Senior Manager Permitting, Approvals and Cultural Heritage for the Resolution Copper Project. Before he came to Resolution Copper he was the Director of the Department of Environmental Quality for the Gila River Indian Community with management responsibility for a broad range of programs including air quality, pesticides, waste, water quality and wildlife. He holds a bachelor degree in Public Policy and Public Service from Arizona State University.

Tiffany Stilgenbauer

Tiffany Stilgenbauer

Manager, Business Improvement

Tiffany currently leads the Resolution Copper team in driving a culture of continuous improvement. Tiffany has been at Resolution Copper since 2007, holding several positions, including Superintendent, Information Systems & Technology. She holds a Master’s Degree in Business Administration with a concentration in Accounting.

Rob Tobin

Rob Tobin

Manager, Underground Operations & Maintenance

Rob leads the Underground Operations & Maintenance Team, which is responsible for maintaining and operating the underground critical assets. Before joining Resolution Copper, Rob worked for Cementation on shaft sinking projects in Timmins Ontario Canada, Sudbury Ontario Canada, and 10 Shaft at Resolution Copper as an Electrical Superintendent. He has a Business Administration and Marketing Diploma from Canadore College, and an Electrical Engineering Technologist Diploma from Cambrian College. Rob has been with Resolution Copper since 2017.

Ryan Ewing

Ryan Ewing

Manager, Surface Operations & Maintenance

Ryan is the Manager of Surface Operations & Maintenance at Resolution Copper, which consists of electrical and mechanical maintenance, water treatment plant operations, site construction and reclamation, maintenance planning, reliability and engineering. He has recently joined the Resolution team with a focus on safe operation, implementing leading asset management practices, strategy and designs utilizing technology and best practices to develop the mine of the future. Ryan joined Rio Tinto in 2008 has held a variety of engineering and management roles, including leading the surface mining and asset management team at Rio Tinto’s Diavik Diamond Mines operation in Northwest Territories Canada. He has a mechanical engineering degree from Lakehead University and an MBA through the University of Athabasca.

Brad Lingard

Brad Lingard

Business Partner, Health, Safety, Environment & Security

Brad leads the Resolution Copper Health, Safety, Environment & Security team supporting the plan to permit and build a safe and environmentally sensitive mine. Before joining Resolution Copper, Brad led HSE teams at other Rio Tinto operations and projects in the US, Peru & Australia and has been with Rio Tinto since 2001.

Our Work

Understanding of a Unique Native Plant Species in Arizona

At Resolution Copper, we take special care to proactively minimize environmental impacts of the project and we do that in consultation

Vandalism at Oak Flat

A member of the Resolution Copper team discovered that a number of crosses located at the Oak Flat Campground had been removed from their place and left on site. We are dismayed by this disrespectful act and have notified the U.S. Forest Service of the incident.

Protecting a Unique Cultural Resource: The Emory Oak

Emory oak acorns (Quercus emoryi) are a critical component of Western Apache cultural heritage. Not only are the acorns a traditional source of food

Helping an Endangered Prickly Plant to Thrive

At Resolution Copper, we take special care to proactively minimize environmental impacts of the project and we do that in consultation

Communities receive renewable drinking water

Native American communities in eastern Arizona will benefit from a new source of clean drinking water through a project sponsored by Resolution Copper

From Milkweed to Monarchs

Monarch butterflies need mountain forests in Mexico for winter habitat, which are under pressure for competing use by tourism and agriculture. In the U.S. monarch butterflies need milkweed toto reproduce and feed, but milkweeds are under

Arizonans Support New Copper Production

New poll commissioned by Resolution Copper and conducted by OH Predictive Insights (OHPI) finds that support for a mine in the region

Vandalism at Oak Flat

We were saddened to hear of the thoughtless vandalism at Oak Flat. As a company, we have been committed to engagements and consultation with the Native American Tribes that have ancestral ties to the area. Through this dialogue

Water Use Statement

"Resolution Copper has already spent tens of millions of dollars to store enough surface water in the ground to sustain our operations for decades, which will result in a net zero impact to the groundwater when the stored water is recovered."