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WELLINGTON, Utah (AP) -- Arch Coal Co. has reopened a Utah coal mine after closing off a section that caught fire.
St. Louis-based Arch Coal shut down the Dugout Mine for nearly three weeks to deal with rising levels of deadly carbon monoxide from the smoldering fire.
The company says it removed water pumps and left the section at the mine to flood.
The company believes a chemical reaction likely caused a coal seam to ignite, but it didn't produce any open flames.
Arch Coal spokeswoman Kim Link says none of Dugout's 275 workers were furloughed because of the shutdown. They were reassigned to other duties, some picking up highway litter. Link says the mine reopened late last week.
(Copyright 2010 by The Associated Press. All Rights Reserved.)
