Mark Lawrence Plaumann

American Healthcare Management, Inc. is a company that provides personal nursing services through their subsidiary, Guiding Star Home Care and Skilled Nursing. The private company is based in King of Prussia, PA and has subsidiaries in the United States. The company offers consultations and care for individuals in Georgia.

Elcotel, Inc. designs, develops, manufacture and markets microprocessor-based smart payphone electronics with embedded operating software and back office payphone management software systems with features and functions required for independent providers to compete with the regional bell telephone operating companies in the provision of payphone terminals and related public telephone services. The company was founded in 1985 and is headquartered in Sarasota, FL.

CellMetrix, Inc. is a medical technology company with limited business operations. The Company planned to fully develop laboratory systems that provide highly sensitive testing capabilities through automated screening technology. It is also planned to develop numerous clinical applications that test for cancer or other serious medical conditions. The Company's first clinical application, LungCheck, was targeted at healthcare providers that treat people at risk for lung disease. The LungCheck test would be fully leveraged through integration with technology provided by AccuMed International, Inc. through the Patent and Technology License and Registration Rights Agreement.

Wexford Capital LP (Wexford) is an independent, SEC-registered investment advisor headquartered in West Palm Beach, Florida with additional office in Stamford, Connecticut. The firm was founded by Charles Davidson, Joseph Jacobs and Robert Holtz in 1994. Wexford provides investment advice to a variety of private pooled investment vehicles over which the firm has discretionary trading authority.

Ernst & Young LLP engages in the provision of accounting, assurance, tax, transaction, and advisory services. It specializes in the actuarial, analytics and big data, cyber security, accounting compliance and reporting, center for board matters, international financial reporting standards, country tax advisory, global trade, tax accounting, and climate change and sustainability. The company was founded in 1989 and is headquartered in New York, NY.

Teledyne FLIR Detection, Inc. develops security related products. Its products include detectors, sensors and radars. The firm protects nuclear power plants, commercial and military seaports, navy vessels, the pentagon, natural gas storage systems, pipelines, shopping malls and subways, and detects chemical, biological, radiological, nuclear, and explosive materials. The company was founded in 1975 and is headquartered in Stillwater, OK.

Rhino GP LLC owns and operates coal reserves. The company is headquartered in Greenwich, CT.

Rhino Resource Partners LP is a diversified coal producing limited partnership company, which focuses on coal and energy related assets and activities. It produces, processes and sells high quality coal of various steam and metallurgical grades from multiple coal producing basins in the U.S. It operates through the following four segments: Central Appalachia, Northern Appalachia, Rhino Western, and Illinois Basin. The Central Appalachia segment consists of Tug River and Rob Fork mining complexes. The Northern Appalachia segment comprises Hopedale mining complex, Sands Hill mining complex, and Leesville field. The Rhino Western segment includes the underground mine in the Western Bituminous region. The Illinois Basin segment covers the underground mine, preparation plant, and river loadout facility, a well as Taylorville field reserves. The company was founded on January 11, 2006 and is headquartered in Lexington, KY.