In this June 12, 2011 photo released on July 5, 2011 by Tokyo Electric Power Co., masked workers in protective outfits prepare to drop one of sliding concrete slabs into a slit of the upper part of ... more 
In this June 12, 2011 photo released on July 5, 2011 by Tokyo Electric Power Co., masked workers in protective outfits prepare to drop one of sliding concrete slabs into a slit of the upper part of the sluice screen for Unit 2 reactor at the tsunami-crippled Fukushima Dai-ichi nuclear power plant in Okuma, Fukushima Prefecture, northeastern Japan, in their effort to decrease the leak of radiation contaminated water to the ocean. (AP Photo/Tokyo Electric Power Co.) EDITORIAL USE ONLY less 
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Associated Press | Photo By Tokyo Electric Power Co.
Wed, Jul 6, 2011 2:31 AM EDT