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Dirk Hallen was named Chief Executive Officer of Hi-Crush Inc. effective November 30, 2020. Prior to his accepting this position with Hi-Crush, Mr. Hallen was Co-founder and Chief Executive Officer of Pronghorn Logistics, LLC, which was acquired by Hi-Crush in May, 2019. Prior to Pronghorn, he was Director of Corporate Development at Rockpile Energy Services and worked as a management consultant at Booz & Company focused on the oil and gas industry. Mr. Hallen also serves on the Board of Directors of Hi-Crush.