1.   Helmeted workers throughout the city were spreading tarpaulins and plastic in an attempt to keep as much dry as possible.

2.   Reporters allowed inside for the first time saw search dogs gingerly creeping and helmeted workers crawling into spaces braced with timbers like a mineshaft.

3.   Reporters allowed inside for the first time saw search dogs gingerly creeping and helmeted workers crawling into spaces braced with four-by-fours like a mineshaft.

4.   Video footage released earlier Friday by the Japanese Self-Defense Forces showed helmeted workers picking at a mound of gray debris with shovels.