Yet the space the elegant new galleries stream with natural light manages to celebrate the peculiar expansiveness and exuberance of American art.

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They are widely regarded as a world-class natural attraction containing marvellous stream passages formed by three rivers that sink underground on the slopes of Cuilcagh Mountain.

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Fractionators take a mixed stream of natural gas liquids (the liquid stuff that comes out of the ground along with natural gas) and process it into pure products like ethane, propane and butane.

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When activated, the five blocks ignite one after another for about a minute apiece, creating the steady stream of smoke that accompanies the natural smoke from the burned ballot papers.

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Daylighting the stream allowed it to be used again as a natural channel for stormwater runoff.

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Berkshire already has a stake in MidAmerican Energy Holdings , which "delivers our largest stream of non-insurance earnings" and will soon carry 8% of the natural gas in the U.S., he disclosed in this year's annual report.

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