DALLAS—HollyFrontier Corp. hired Karissa Mooney as manager of product development and quality.
Before joining the firm, Mooney held leadership roles at Hudson Cos., Citgo Asphalt and NuStar Asphalt.
Monney and her team will focus on expanding the business, specifically in process oils, base oils and waxes. She will guide the firm's full implementation of its rubber technology laboratory for tire research.
HollyFrontier Corp. is an independent petroleum refiner and marketer headquartered in Dallas. It produces gasoline, diesel fuel, jet fuel and other specialty products.