Duke R. Ligon

Part of Vitol Holding II SA, SemGroup Energy Partners GP LLC operates crude oil assets. The company is based in Tulsa, OK. SemGroup Energy Partners GP was acquired by Vitol, Inc. from SemGroup LP on November 24, 2009.

BlueKnight Energy Partners LP engages in the operation of independent asphalt facilities. It provides integrated terminalling services for companies engaged in the production, distribution, and handling of liquid asphalt. The company was founded on February 22, 2007 and is headquartered in Tulsa, OK.

Bankers Trust Co. is an asset management headquartered in Des Moines, Iowa. The firm was founded in 1917 and is a subsidiary of BTC Financial Corp. The firm serves as a trusted partner for individuals’ comprehensive financial planning, trust and fiduciary needs.

TEPPCO Partners LP is a publicly traded energy logistics partnership with operations that span much of the continental United States. TEPPCO owns and operates an extensive network of assets that facilitate the movement, marketing, gathering and storage of various commodities and energy-related products. The partnership's midstream portfolio of assets comprises pipelines that gather and transport refined petroleum products, crude oil, natural gas, liquefied petroleum gases (LPGs) and natural gas liquids (NGLs), and includes one of the largest common carrier pipelines for refined petroleum products and LPGs in the United States. TEPPCO also owns a marine business that operates primarily on the United States inland and Intracoastal Waterway systems, and in the Gulf of Mexico.

Steelpath Energy Infrastructure Investment Co. is a closed-end, non-diversified management investment company. The company's investment objective is to generate a high level of current income, with a focus on capital preservation and inflationary growth primarily through debt and equity investments. The trust was founded in August 2010 and is headquartered in Dallas, TX.

Pre-Paid Legal Services, Inc. provides legal services. It offers direct sales and network marketing. The company was founded by Harland Cecil Stonecipher in 1972 and is headquartered in Ada, OK.

Part of Blueknight GP Holding LLC, Blueknight Energy Partners GP LLC is a company that provides transportation services. The company is based in Tulsa, OK.

New Emerald Energy LLC engages in drilling oil and gas wells. The company is based in Denver, CO. The company was founded by James Russell Reger.

Heritage Transfer Agency, Inc. is a transfer agency company. It provides investor and shareholder services. The company is headquartered in Toronto, Canada

Orion California LP engages in oil and gas production. The private company is based in California.

American Battlefield Trust operates as a heritage land protection organization. It also engages in the preservation of the history of American Civil War battlefields. It provides the Hallowed Ground quarterly membership magazine, classroom resources, special events, battlefield interpretation, and landscape restoration and upkeep. The company was founded in 1999 and is headquartered in Washington, DC.

Vantage Energy Services, Inc. operates as a blank check company. It acquires through a merger, capital stock exchange, exchangeable share transaction, and other similar business combination in the oilfield services industry. The company is headquartered in Houston, TX.

Mekusukey Oil Co. LLC is a private company based in Wewoka, OK that was founded in 1970 by Duke R. Ligon. The company is one of the largest private mineral owners in the area and focuses on acquiring and managing perpetual mineral interests, rather than selling them.

System One, Inc. operates as Commercial banking. The company is headquartered in Columbus, OH.

Cavaloz Holdings, Inc. functions as an investment holding private company. The company is based in Wilmington, DE.

Oklahoma Hall of Fame, Inc. engages in providing education services. The company was founded by Anna B. Korn in1927 and is headquartered in Oklahoma City, OK.

Pardus Oil & Gas LLC engages in the acquisition, exploration, and development of onshore oil and gas assets. Its operational focus areas include the Buda, Georgetown, Edwards and Glen Rose in the East Texas Basin; and the Eaglebine in the East Texas Basin with exploration and development activities focused on the Woodbine Sandstone, Eagle Ford Shale and other stacked formations. The company is headquartered in Fort Worth, TX.

Security State Bank of Oklahoma operates as a state chartered commercial bank. It provides personal checking and savings accounts, certificate of deposit, personal borrowing, business and agriculture loans and checking accounts, and mortgage financing. The company is headquartered in Wewoka, OK.

Voyager Oil & Gas, Inc. engages in the exploration, development, and production of oil and gas. The company also engaged in the business of acquiring acreage in prospective natural resource plays primarily within the Williston Basin located in Montana and North Dakota. It seeks to accumulate acreage blocks on a non-operated basis and build net asset value via the production of hydrocarbons in repeatable and scalable opportunities. The company was founded by Steven Lipscomb in March 2002 and is headquartered in Billings, MT.

National Oil Production Co LLC engages in the exploration and production of oil and gas wells. The company was founded in March 2002 and is headquartered in Fort Worth, TX.