At least 20,000 rescuers raced to uncover survivors in Japan Friday (September 7), buried under landslides after a deadly quake the day before.<br /><br />It tore through the northern island of Hokkaido and sent mud plowing through homes. Dozens are still missing.<br /><br />Officials say at least 16 people have been confirmed dead after a powerful earthquake rattled the northern Japanese island of Hokkaido on Thursday.