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・ Utah Jynx
・ Utah Lake
・ Utah Lake sculpin
・ Utah Lake State Park
・ Utah League of Cities and Towns
・ Utah locations by per capita income
・ Utah Motorsports Campus
・ Utah Mr. Basketball
・ Utah Municipal Power Agency
・ Utah Museum of Contemporary Art
・ Utah Museum of Fine Arts
・ Utah National Guard
・ Utah National Parks Council
・ Utah Native Plant Society
・ Utah Office of Tourism
Utah oil sands
・ Utah Oil Sands Joint Venture
・ Utah Olympic Oval
・ Utah Olympic Park
・ Utah Olympic Park Jumps
・ Utah Olympic Park Track
・ Utah Open
・ Utah Open Lands Conservation Association
・ Utah Opera
・ Utah Parks Company
・ Utah Parks Company Service Station
・ Utah PGA Championship
・ Utah Phillips
・ Utah physa
・ Utah prairie dog


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Utah oil sands : ウィキペディア英語版
Utah oil sands

In the United States a large supply of oil sands are found in Eastern Utah. These deposits of bitumen or heavy crude oil have the ability to generate about 12 to 19 billion barrels from a number of prominent sites.〔("About Tar Sands." ) Oil Shale and Tar Sands Programmatic EIS Information Center. The U.S. Department of the Interior, Bureau of Land Management, 19 Nov. 2008. Web. 14 Oct. 2009〕
== History ==

Since the early 1900s the oil sand deposits have been extracted mainly for the use of road pavement. Later, in the 1970s, oil companies began to experiment with the deposits in the hope of using it for their benefit. These experiments ended in the late 1980s when the technologies being used were concluded inefficient and too expensive.〔"(The Utah Tar Sands. )" Oil Sands Recovery Technology. Nevtah Capital Management Corp., 7 July 2008. Web. 12 Oct. 2009〕 Recently, oil companies have again become interested in Utah's oil sands. Now that conventional oil is becoming harder to find, oil sands have become an alternative fuel source.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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