One person is dead and nine others remain unaccounted for after a chemical tank holding nearly a million gallons of a corrosive liquid imploded at a Washington paper mill, authorities said. Nine others were injured in the spill, some severely. Emergency responders were still working on recovery efforts at Nippon…

The implosion of a chemical tank at a pulp and paper mill in Washington state injured at least 10 people, while an undisclosed number of others had been killed or remained missing, authorities said.