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In this Oct. 15, 2010 file photo, Brandon Forseth, left, and Blaine Williams work on drilling a small test well at Newberry National Volcanic Monument near LaPine, Ore. Geothermal energy developers working on the flanks of an ancient Oregon volcano say they have taken an important technological step toward turning geothermal energy from a novelty into a major source of homegrown power that does not contribute to global warming.

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Geothermal takes a technological step forward

Geothermal energy developers working on the flanks of an ancient Oregon volcano say they have taken an important technological step toward expanding geothermal energy from a small niche into a potential major source of homegrown power, but more work needs to be done.

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