Dennis E. Justus

Tecton Energy, LLC was a Houston, TX based oil and gas company focused on growing its reserve base through the acquisition and development of properties in unconventional tight gas basins in the Rocky Mountain region of the western United States and Canada. The company was founded in 2005.

Petro Harvester Oil & Gas LLC operates as an upstream exploration and production company. It focuses on the acquisition, development and operational improvement of oil properties. The company was founded in July 2010 and is headquartered in Plano, TX.

The American Institute of Certified Public Accountants provides vocational education in accounting. The company provides services to the accounting community, regulatory bodies, and other organizations. It also operates in Jersey City, Washington, and Lewisville. It was founded in 1887 and is headquartered in New York City, NY.

Unocal Corp. explores, develops, produces, and markets crude oil and natural gas. The firm also produces geothermal energy in Indonesia and the Philippines and makes petroleum coke, graphite's and silicon carbide materials. The company was founded on October 17, 1890 and is headquartered in El Segundo, CA.

Part of BHP Group Ltd., BHP Petroleum (Americas), Inc. excavates for oil & gas. The company is based in Houston, TX.

Monsanto Co. engages in the provision of agricultural products to farmers. It provides other seed companies with genetic material and biotechnology traits for their seed brands. The company was founded by John F. Queeny in 1901 and is headquartered in St. Louis, MO.