Roundup: Delta’s oil refinery / US consumer prices / Media mogul dies By Deanna B. Narveson - August 12, 2020 FacebookTwitterLinkedinEmailPrint Losing money: Delta Air Lines tried a bold experiment when it bought an oil refinery in 2012 outside Philadelphia—the first such purchase by a major U.S. airline—but the company’s failed foray i… Already an INSIDER? Sign in.