At least one person has died, nine people were injured and nine employees remain unaccounted for after a large vat of chemical treatment product, including hazardous materials, ruptured at a paper and packaging facility in Washington state, fire officials said.

Authorities have confirmed that one person died and 9 others remain unaccounted for after a chemical tank imploded at a pulp and paper mill in Washington state

At least one person has died, nine people were injured and nine employees remain unaccounted for after a large vat of chemical treatment product, including hazardous materials,…