There’s not much that Flint Hills Resources’ Mike Clausewitz and Deb Preschler don’t know about safely refining oil and producing petrochemicals. Deb, an operations innovation director, and Mike, an enterprise leak detection and repair (LDAR) execution lead, have together clocked up nearly 60 years at Flint Hills’ Corpus Christi East and West, two of the three Flint Hills Resources refineries that separate oil into jet fuel, low-sulfur gasoline, diesel and the petrochemicals used to manufacture clothing, carpet, tires and much more.