The chief manager of the Fukushima Daiichi nuclear plant, Masao Yoshida (pictured left), died of cancer on July 9th aged 58. Yoshida disobeyed Tepco's orders and inundated the three reactors with sea water to provide cooling. Tepco hesitated, as doing so would guarantee the reactors would never be usable again due to salt water corrosion. Yoshida even affirmed the carrying out of Tepco's orders to NOT use sea water, verbally over the phone, while hand writing a note to his assistant to go right ahead and order sea water cooling. Tepco only learned of this at a later date.