Lt. Chris Cammock says firefighters put out flames just before midnight Thursday and the three were treated at Skagit Valley Hospital for burns to arms and faces.
A 2-liter soda bottle was filled with gas for the oil extraction process and something ignited the fumes. The blast shattered a window and damaged walls.
The apartment building was evacuated for two hours while a Washington State Patrol bomb squad made sure there were no more explosives. The Mount Vernon fire marshal closed five units surrounding the damaged apartment for an investigation.
More Northwest Headlines
1 dead, 2 injured in drive-by shooting in Federal Way 8:09 a.m. Yakima youngsters mix Legos, science education Activists rappel off Oregon bridge to stop Shell icebreaker Stanwood man pleads guilty to stealing from Swinomish tribe Death penalty dropped from Carnation killings trial Poll: Just 30 percent inclined to re-elect Gov. Inslee GOP lawmakers want Washington to look at Planned Parenthood Salvation Army sets up charging ports for Portland homeless
Our new comment system is not supported in IE 7. Please upgrade your browser here.