McKinsey Lyon serves as Senior Vice President of External Affairs at Perpetua Resources Corp., where she spearheads the company’s government relations, stakeholder engagement, Indigenous partnerships, and community outreach initiatives. In this pivotal role, Lyon drives the advancement of Perpetua’s Stibnite Gold Project, North America’s only domestic antimony source, by fostering collaborative relationships with federal and state agencies, local communities, and tribal nations. Her strategic leadership has been instrumental in navigating complex regulatory landscapes, securing key permits, and promoting the project’s environmental restoration benefits. With over two decades of experience in the mining and natural resources industry, Lyon’s career spans public policy, corporate communications, and sustainability. She previously held senior positions at major mining firms, including Vice President of Government and Community Relations at a leading gold producer, where she successfully led permitting for multi-billion-dollar projects amid stringent environmental regulations. Lyon holds a Bachelor’s degree in Political Science from the University of Idaho and an MBA from Boise State University, complementing her deep expertise in resource development. Among her notable achievements, Lyon has been recognized with awards for excellence in corporate citizenship and Indigenous relations, including the Northwest Mining Association’s Distinguished Service Award. Under her guidance, Perpetua has established innovative reclamation programs and economic development partnerships, positioning the company as a leader in responsible mining practices and contributing to U.S. critical minerals security.