Prior to that, she was a senior process control engineer at ARCO Petroleum Products and a process engineer at Chevron. Her areas of expertise include airborne particulate matter measurement, characterization, and emissions, and air pollution control. She received her B.S. (1980) in chemical engineering from the University of Idaho and Ph.D. (1991) from North Carolina State University. Dr. Claiborn was a member of the Western Governor’s Association’s Western Regional Air Partnership Expert Panel on Windblown and Mechanically Generated Fugitive Dust, and a contributing author for the U.S. Environmental Protection Agency’s (EPA’s) Air Quality Criteria Development for Particulate Matter.