By Tim Gaynor and Colleen Jenkins WEST, Texas (Reuters) - When Dr George N. Smith saw a plume of smoke rise from a Texas fertilizer plant, he rushed to the nursing home where he worked to save the elderly residents. He and others quickly moved 127 residents from the side facing the plant, which was less than a quarter mile away, to the other side of the building away from the plant. "I didn't ever anticipate an explosion," Smith said. "I was just trying to get them away from the toxic chemicals." When the plant exploded, the windows on the side closest to the plant blew in. ...