 Pedzisa mutsara unotevera: Muna March 1989, bhiri raibvumira kuchera mudura racho rakanga richifamba neSeneti uye rakanga rava kutarisirwa kuti riiswe kuvhoti apoKuputika kwemafuta kweExxon Valdez kwakakonzera kunonoka uye pakupedzisira kukanganisa nzira yacho. 