Holly Corporation, through its subsidiaries, operates as a petroleum refiner in the United States. It involves in the purchase and refining of crude oil; and wholesale and marketing of refined products, such as gasoline, diesel fuel, and jet fuel in Texas, New Mexico, Arizona, Utah, Wyoming, Montana, Idaho, Washington, and northern Mexico. The company also manufactures and markets asphalt products from various terminals in Arizona and New Mexico. In addition, it transports liquid petroleum gas ( ...

TECO Energy, Inc., through its subsidiaries, engages in diversified energy-related operations in the United States. The company's activities primarily include generation, purchase, transmission, distribution, and sale of electric energy. The company provides retail electric services to approximately 661,000 customers in the west central Florida. It also purchases, distributes, and sells natural gas to approximately 332,000 customers, including residential, commercial, industrial, and electric po ...

Enbridge, Inc. transports and distributes crude oil and natural gas in North America and internationally. It operates in five segments: Liquids Pipelines, Gas Pipelines, Sponsored Investments, Gas Distribution and Services, and International. The Liquids Pipelines segment operates a common carrier pipeline and feeder pipelines that transport crude oil and other liquid hydrocarbons. The Gas Pipelines segment consists of investments in natural gas pipelines, including the U.S. portion of the Allia ...

Norfolk Southern Corporation, through its subsidiaries, engages in the rail transportation of raw materials, intermediate products, and finished goods primarily in the United States and parts of Canada. Its operations consist of transportation of coal, coke, and iron ore products; general merchandise traffic, which consists of automotive products, metals and construction products, agriculture and consumer products, and paper, clay, and forest products; and intermodal traffic. Automotive products ...

ING Groep N.V. operates as a financial services company. The company offers life insurance products, which consist of policies written for both individual and group customers, such as endowment, term, whole life, and unit linked insurance policies, as well as mandatory and voluntary pension funds; and non-life insurance products, including coverage for fire, automobile, disability, health-care, transport, and aviation insurance, as well as third party liability insurance, and indirect premiums. ...

Southwest Gas Corporation is principally engaged in the business of purchasing, transporting and distributing natural gas to residential, commercial and industrial customers in the southwestern United States.

Southwest has 2,500 employees who serve approximately 1.8 million customers in Arizona, Nevada and portions of California. The company added 71,000 customers in 2006, maintaining its status as one of the fastest-growing natural gas distribution companies in the nation (excluding mergers ...

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Southern Union provides natural-gas transportation, storage, gathering, and processing services and operates regulated gas utilities serving customers in Missouri and Massachusetts. It also operates one of the nation's largest liquefied natural gas import terminals. The company exchanged its 50% interest in the Transwestern pipeline for an additional 25% interest in the Florida Gas Transmission pipeline, bringing its ownership to 50%.