they re investigating the cause. 11 of the 28 people in the mine shaft survived. few chinese mines adapt to regulations and accidents are common in the country. in the michael jackson involuntary manslaughter trial, prosecutors focused on three of murray s girlfriends. the married doctor had conversations with three women he was dating on the day jackson died. prosecutors are trying to use the women s calls and text messages to establish a time line leading up to the singer s death. those are the headlines from cnn, the world s news leader. i m zain verjee, and world business today starts now. good morning from cnn london, i m nina del santos. i m andrew stevens. welcome. the top stories this wednesday, october the 5th. a rally on wall street keeps the u.s. out of bear market territory. shares sink in korea and japan while better than expected retail sales boost the aussie market. and european investors are in a buying mood despite a downgrade of italian debt.