Authorities on Thursday were investigating a fire at a Chesapeake Energy Corp oil well in Texas that killed one worker and injured three others. Emergency teams were working to contain a blowout that triggered Wednesday’s blaze at a remote site near Deanville, Texas, about 75 miles (121 km) east of Austin, a representative for the Burleson County Sheriff’s Office said. The U.S. Occupational Safety and Health Administration, which investigates worksite fatalities, said on Thursday it had opened an investigation.