Four workers were burned in a flash fire on Wednesday morning at ConocoPhillips’ Lost Cabin natural gas processing plant in central Wyoming, according to a company statement. "A flash fire that extinguished itself immediately occurred at approximately 8:30 a.m. MDT today during a planned maintenance operation. We know of four contract employees working on the site who were injured and have been transported to receive medical attention," ConocoPhillips said in a statement.