UPDATED: MARCH 15 AT 6:48 P.M. BUTTE, Mont. - At approximately 4:10 p.m., Butte emergency dispatch received a call reporting an explosion at Silver Bow Truck and Auto Center, 3873 Wynne Avenue, according to Sheriff Ed Lester. Butte Police, Butte Fire Rescue and A-1 Ambulance responded to the scene. It is reported that two men had been working on an oil storage tank when the explosion occurred. Sheriff Lester said one man was pronounced dead at the scene. The second man was transported to a local hospital, with serious injuries.  Investigators from Butte Fire, Butte Police and the Butte-Silver Bow Coroners office are at the scene.Â