John C. van Roden

Penn Virginia GP Holdings LP manages coal mines and natural gas facilities. The company was founded in June 2006 and is headquartered in Radnor, PA.

Guardian Capital Partners Investment Management LP (Guardian Capital Partners) is a private equity firm founded in 2007 by Scott D. Evans, Peter H. Haabestad and Hugh Kenworthy III. The firm is headquartered in Wayne, Pennsylvania.

SEMCO Energy, Inc. supplies and markets natural gas. It also also owns and operates businesses such as SEMCO Energy Gas Company and ENSTAR Natural Gas which involve in natural gas, propane distribution, intrastate pipelines and natural gas storage. The company is headquartered in Plymouth, MI.

PVR Partners LP engaged in the gathering and processing of natural gas and the management of coal and natural resource properties in the United States. It operates through three business segments: Eastern Midstream, Midcontinent Midstream and Coal & Natural Resource Management. The Eastern Midstream segment is engaged in providing natural gas gathering, and other related services in Pennsylvania and West Virginia. The Midcontinent Midstream segment is engaged in providing natural gas processing, gathering services, and other related services. These processing and gathering systems are located primarily in Oklahoma and Texas. The Coal & Natural Resource Management segment involves in the management and leasing of coal properties and the subsequent collection of royalties. It also involves in other land management activities, such as selling standing timber, leasing coal-related infrastructure facilities and collecting oil and gas royalties. The company was founded in July 2001 and is headquartered in Radnor, PA.

Horsehead Corp. manufactures zinc and zinc-based products. It offers waekz oxide, SDS, iron, calcine, zinc dust and zinc powder. The company was founded in 2003 and is headquartered in Pittsburgh, PA.

Part of Exelon Corp., Conectiv LLC is a wholesale energy company. The company is based in Newark, DE.

Main Line Health, Inc. provides health care services. Its services include pediatric emergency medicine, orthopedic surgery and orthopedics, bariatric and weight loss surgery, breast cancer program, neurosurgery, urology, obstetrics and gynecology and maternity, vascular surgery, emergency medicine, cardiology, pediatrics, maternity, neurovascular care, general surgery, primary care, trauma centers, imaging and diagnostic radiology. The company was founded in 1985 and is headquartered in Bryn Mawr, PA.