An explosion likely caused by a methane gas buildup ripped through an underground coal mine in Colombia, killing 21 workers, officials said. A similar blast there killed dozens of miners four years ago. (Jan. 26)
Associated Press | January 27, 2011
Tags:. .ago. .colombian. .methane. .coal. .buildup
Ago Blast Buildup Coal Colombian Dozens Explosion Gas Jan Methane Miners Ripped Underground