A lightning strike this morning caused a fire at a saltwater disposal well in the area of County Roads 4590 and 4591 off of Texas 114 a few miles west of Boyd. Four tank batteries caught fire, and heavy black smoke could be seen for miles. Witnesses reported hearing an explosion when the tanks were hit. An operator was on the scene and knocked back a bit when the lightning struck, but he was not injured. The lightning strike happened around 8:30 a.m. As of 9:45, two tank batteries remained on fire. Fire departments from Boyd, Cottondale, Paradise and Rhome responded. The well is owned by Green Tide Water Disposal. Disposal wells are used to inject waste water used in the process of gas exploration back into the ground.