American Electric Power

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Reliant Energy

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Georgia-Pacific

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Phillips Petroleum

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Valero Energy

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Occidental Petroleum

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Edison International

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Waste Management

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Dominion Resources

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Public Service Enterprise Group

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Consolidated Edison

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Sempra Energy

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Plains All American Pipeline

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Science Applications Intl.

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TransMontaigne

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Pinnacle West Capital

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Constellation Energy

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Peter Kiewit Sons'

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Lyondell Chemical

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Enterprise Products Partners L...

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Vulcan Materials

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Transocean Sedco Forex

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Alliant Energy

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Potomac Electric Power

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PNM Resources

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Weatherford International

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Republic Services

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Nabors Industries

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MDU Resources Group

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Western Resources

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New Jersey Resources

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Quanta Services

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Equitable Resources

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National Oilwell

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Hawaiian Electric Industries

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Newmont Mining

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EOG Resources

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World Fuel Services

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American Water Works

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Southwest Gas

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Oglethorpe Power

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