Thomas S. Liberatore has joined Eclipse Resources as a partner, executive vice president and COO, the State College, PA-based oil and gas company said. Liberatore, who resigned as vice president of Cabot Oil & Gas Corp.’s East region following a restructuring there two years ago (see Daily GPI, June 1, 2009), is a member of the American Association of Petroleum Geologists and the Appalachian Geological Society, has served on the board of directors of the West Virginia Oil and Natural Gas Association and is a past president of the Independent Oil & Gas Association of West Virginia. Additionally, Brian Panetta, who was previously a geologist with Waco Oil & Gas and a senior geologist for Chesapeake Energy Corp., has joined Eclipse as vice president of geology. Eclipse focuses on the acquisition, exploration and development of unconventional oil and natural gas properties in the Appalachian Basin, including the Marcellus Shale, Utica Shale and Upper Devonian shales.