Fukushima Investigators Say More Study Needed on What Went Wrong

Fukushima Investigators Say More Study Needed on What Went Wrong

Tomohiro Ohsumi/Bloomberg

Members of the media and Tokyo Electric Power Co. (Tepco) employees, wearing protective suits and masks, look at the No. 4 reactor building at the company's Fukushima Dai-Ichi nuclear power plant in Okuma Town, Fukushima Prefecture, Japan, on May 26, 2012.