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Workers in protective suits and masks wait to enter the emergency operation center at the crippled Fukushima Dai-ichi nuclear power station in Okuma on November 12, 2011. Japan took a group of journalists inside the crippled Fukushima Dai-ichi nuclear plant for the first time, stepping up its efforts to prove to the world it is on top of the disaster cleanup.
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A man directs traffic at a vehicle radiation decontamination center at J-Village, a former soccer training complex which now serves as an operations base for those dealing with Japan's nuclear disaster, in Fukushima prefecture on November 11, 2011.
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A dosimeter shows radiation levels of more than 70 microsieverts per hour on the morning of Nov. 12, 2011, in the premises of the Fukushima Dai-ichi nuclear power plant in Fukushima Prefecture, northeastern Japan. The government and the plant's operator, Tokyo Electric Power Co., allowed reporters to enter the plant for the first time since it was badly damaged by a series of explosions just after the March 11 earthquake and tsunami.
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A deserted street inside the contaminated exclusion zone around the crippled Fukushima Dai-ichi nuclear power station is seen through a bus window Saturday, Nov. 12, 2011.
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A photo taken Nov. 12, 2011, inside the premises of the Fukushima Dai-ichi nuclear power plant in Fukushima Prefecture, northeastern Japan, shows the upper part of No. 3 reactor building.
AP Photo/David Guttenfelder
The Unit 4 reactor building of the crippled Fukushima Dai-ichi nuclear power station is seen through a bus window in Okuma, Japan, Saturday, Nov. 12, 2011. Reporters allowed into the damaged nuclear power plant for the first time Saturday saw a striking scene of devastation: Twisted and overturned vehicles, crumbling reactor buildings and piles of rubble virtually untouched since a tsunami struck more than eight months ago.
AP Photo/Ikuro Aiba
Crushed piping is observed from inside a bus at the crippled Fukushima Dai-ichi nuclear power station in Okuma, Fukushima Prefecture, Japan, Saturday, Nov. 12, 2011.
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An official from the Tokyo Electric Power Co. and another man, both wearing protective suits and masks, ride on a bus as they pass by the crippled Fukushima Dai-ichi nuclear power station, November 12, 2011.
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An official from the Tokyo Electric Power Co. (TEPCO), wearing a protective suit and mask, uses a plastic-covered megaphone to speak to fellow TEPCO workers and journalists as they drive towards the crippled Fukushima Dai-ichi nuclear power station in Okuma on November 12, 2011.
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A reporter takes photographs from inside a bus in the premises of the Fukushima Daiichi nuclear power plant in Fukushima Prefecture, northeastern Japan, Nov. 12, 2011.
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Officials from the Tokyo Electric Power Co. and Japanese journalists pass by a newly-built sea wall next to the crippled Fukushima Dai-ichi nuclear power station in Okuma, November 12, 2011.
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The crippled Fukushima Dai-ichi nuclear power station is seen through a bus window in Okuma on November 12, 2011.
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The crippled Fukushima Dai-ichi nuclear power station is seen through a bus window in Okuma on November 12, 2011.
DAVID GUTTENFELDER/AFP/Getty Images
The crippled Fukushima Dai-ichi nuclear power station is seen through a bus window in Okuma on November 12, 2011.
AP Photo/David Guttenfelder
The crippled Fukushima Dai-ichi nuclear power station is seen through a bus window in Okuma, Japan Saturday, Nov. 12, 2011.
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Tokyo Electric Power Co. employees work inside the emergency operation center at the crippled Fukushima Dai-ichi nuclear power station in Okuma on November 12, 2011.
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Members of the media, wearing protective suits, interview Japan's Minister of the Environment Goshi Hosono and Chief of the Dai-ichi nuclear plant Masao Yoshida inside the emergency operation center at the crippled Fukushima Dai-ichi nuclear power station in Okuma on November 12, 2011.
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A men dresses in a room where workers leave their clothing before putting on protective suits at J-Village, a soccer training complex now serving as an operations base for those cleaning up Japan's nuclear disaster, in Fukushima prefecture, November 11, 2011.
DAVID GUTTENFELDER/AFP/Getty Images
Workers remove their protective clothing at a radiation screening post after arriving at J-Village, a soccer training complex now serving as an operations base for those battling Japan's nuclear disaster in Fukushima prefecture on November 11, 2011.
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A makeshift office where workers pick up their protective suits, masks and gloves is constructed with pink protective sheets, at J-Village, in Fukushima prefecture, November 11, 2011.
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A worker is given a radiation screening as he enters the emergency operation center at the crippled Fukushima Dai-ichi nuclear power station in Okuma on November 12, 2011.
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A man is checked for radiation after arriving at a vehicle decontamination center at "J-Village," November 11, 2011.
DAVID GUTTENFELDER/AFP/Getty Images
Workers dressed in protective suits and masks are checked for radiation outside a building at J-Village, a soccer training complex now serving as an operation base for those battling Japan's nuclear disaster in Fukushima prefecture on November 11, 2011.
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Men sort and clean protective masks at J-Village, November 11, 2011.
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Two workers are directed through a radiation screening center inside a gymnasium after returning to "J-Village," a soccer training complex now serving as an operation base for those battling Japan's nuclear disaster in Fukushima prefecture on November 11, 2011.
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An employee of Tokyo Electric Power Co looks at piles of used protective clothing, that was worn by workers inside the contaminated "exclusion zone," November 11, 2011. The clothing will later be placed inside containers at J-Village.
Kyodo via AP Images
Soup with dumplings is served for workers on Nov. 11, 2011, at "J-Village," where reporters were shown the base for 3,000 people working to bring the crippled plant under control after the accident triggered by the March quake and tsunami.
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Men wearing protective suits and masks work at the crippled Fukushima Dai-ichi nuclear power station in Okuma on November 12, 2011.
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Workers dressed in protective suits and masks wait outside a building at "J-Village," November 11, 2011.
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Workers dressed in protective suits and masks wait outside a building at "J-Village" on November 11, 2011.
Kyodo via AP Images
Landladies from hotels and inns in Fukushima Prefecture and members of the "Hula Girls," a team of hula dancers at a Hawaiian-style spa leisure complex in the prefecture, dance during a promotional event at a hotel in Tokyo on Nov. 10, 2011.
The event was held by Fukushima Prefecture to revitalize its tourism sector that has suffered in the wake of the nuclear crisis at the Fukushima Daiiichi power plant.