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Denver-based Anschutz Exploration Corp. is among several closely held U.S. natural-gas operators that have put themselves up for sale in recent months, hoping to benefit from increased interest in assets based in shale-rock formations across the country.
Anschutz Exploration could fetch about $1 billion, according to one person familiar with the matter.
Other natural-gas companies on the block include Chief Oil & Gas and Talon Oil & Gas LLC, both of Dallas.
