Masayuki Ono, acting head of Tokyo Electric Power Co (TEPCO) nuclear power and facilities section, displays an image showing steam rising from the unit 3 reactor building of TEPCO’s Fukushima Dai-ichi nuclear plant at a news conference at the company’s headquarters in Tokyo on July 18, 2013. Steam has been spotted near a pool storing machinery removed from a crippled reactor at TEPCO’s Fukushima Dai-ichi nuclear power plant at Okuma town in Fukushima prefecture. The roof of the building was blown off in a hydrogen explosion in the days after the March 2011 meltdowns. AFP PHOTO / Yoshikazu TSUNO