Outline: While the cargo ship was berthed at the wharf of Port of Saganoseki for discharging a cargo load of copper sulfide concentrate at about 08:30, June 13, 2009, one of the workers fell while descending a ladder inside No. 3 cargo hold on his way to undertaking the job of stevedoring. Two of the three other workers who went to rescue him also collapsed in the cargo hold. All of the three workers were rescued from No. 3 cargo hold, but later they were confirmed dead.