Mr. O'Brien has more than 40 years of leadership experience across the mining and energy industries, including more than two decades in chief executive, chief financial, and chief operating officer positions. He served as President and Chief Executive Officer of Newmont Mining Corporation from 2007 to 2013, after serving as Chief Financial Officer from 2005 to 2007. From 2013 to 2015, he served as President and Chief Executive Officer of Boart Longyear Group Ltd., one of the world's leading providers of drilling services and equipment to the mining industry. He currently serves as a director on the boards of Vulcan Materials Co. and the Saudi Arabian Mining Co. Previously, he served on the board of Xcel Energy Inc., as Chair of New Gold Inc. from July 2024 until its acquisition by Coeur Mining Inc. earlier this year, and as Chair of Pretium Resources Inc. from 2019 until its acquisition by Newcrest Mining Ltd. in 2022. He received his Juris Doctor from Lewis and Clark College in Portland, Ore., and a bachelor’s degree in economics from the University of Chicago.