According To A Preliminary Investigation By The Greeneville Fire Department And The Tennessee Bureau Of Investigation, Weather Is To Blame For An Explosion At Admiral Propane In Greeneville. A Support For A Tank Failed As A Result Of The Ground Shifting Due To The Freezing And Thawing From The Arctic Weather. The Tank Tipped Causing A Valve On Top To Discharge Propane. Company Officials Say Admiral Customers Should See No Disruptions In Their Service.