William Berry

Williams Partners LP owns, operates, develops & acquires natural gas gathering system and energy assets. It focuses on natural gas gathering, the first segment of midstream energy infrastructure that connects natural gas produced at the wellhead to third-party takeaway pipelines. The company was founded in 2005 and is headquartered in Tulsa, OK.

Continental Resources, Inc. is an independent oil producer engaged in the exploration, development, and production of crude oil and natural gas. The firm's operations include horizontal drilling and protecting groundwater. The company was founded by Harold G. Hamm in 1967 and is headquartered in Oklahoma City, OK.

Frank's International NV engages in the provision of tubular services to oil and gas industries. It operates through the following four segments: Tubular Running Services, Tubulars and Cementing Equipment. The Tubular Running Services segment provides tubular services in international offshore markets and in several onshore international regions. The Tubulars segment designs, manufactures, and distributes large outside diameter (OD) pipe, connectors, casing attachments and sells large OD pipe originally manufactured by various pipe mills. The Cementing Equipment segment provides equipment to enhance the safety and efficiency of rig operations. The company was founded by Frank Mosing in 1938 and is headquartered in Den Helder, Netherlands.

Nexen Group, Inc. manufactures and supplies precision motion control components, power transmission, and web tension control products. Its products include precision linear motion, precision rotary motion, power transmission, and tension control systems. The firm offers services for key industries including: aerospace, robotics, medical machine tool, automotive, factory automation, packaging, and material handling. The company was founded in 1951 and is headquartered in Vadnais Heights, MN.