David O. Rodrigue

SouthWest Water Co. is a company that owns and operates regulated water and wastewater systems in seven states in the United States, serving over half a million residential and business customers. The company provides a broad range of operations, maintenance, and management services, including water production, treatment, and distribution, wastewater collection and treatment, customer service, and utility infrastructure construction management. The company has subsidiaries in the United States, including Hornsby Bend Utility Company, Midway Water Utilities, Inc., and more. The company takes pride in delivering high-quality, reliable service to its customers. The company was founded in 1891 as Land & Water Company and is headquartered in Sugar Land, TX, with around 500 employees. The CEO is Robert MacLean.

Unidynamics, Inc. designs and manufactures material handling applications. The firm also offers repair and testing of winches, hoists, hydraulic and pneumatic cylinders, and safety devices. The company was founded in 1925 and is headquartered in Conroe, TX.

Stallion Oilfield Holdings, Inc. provides drill site products and services for oil and gas operations. The company is headquartered in Houston, TX.

Stallion Oilfield Services, Inc. provides drill-site products and services including accommodation units, surface equipment and solids-control services for oil and gas exploration companies. It delivers products and services in the South Texas, Gulf Coast, Ark-La-Tex, North Texas and Permian Basin, Mid-Continent, Rocky Mountain and Appalachian Basin regions as well as to the global offshore industry. The company was founded in 2002 and is headquartered in Huston, TX.