A tank containing a substance known as white liquor burst in Washington.

A tank of white liquor imploded at the Nippon Dynawave Packaging Company in southern Washington state on Tuesday.

A tank of white liquor imploded at the Nippon Dynawave Packaging Company in southern Washington state on Tuesday.

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

Multiple people were left with chemical burns and other injuries after an \

The implosion of a chemical tank at a pulp and paper mill in Washington state killed an undisclosed number of people, local authorities and company officials confirmed

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,…

First responders are at Nippon Dynawave Packaging in Longview, ‘following the rupture of a tank containing white liquor,’ officials said

Nippon Dynawave Packaging Co. and local law enforcement said the tank's rupture caused "multiple critical injuries" as well as fatalities.

Nine patients from the site were taken to the PeaceHealth St. John Medical Center in Longview, the hospital told ABC. One had succumbed to their injuries.

Nippon Dynawave Packaging in Longview confirmed that several workers died when the toxic tank burst at 7.15am Tuesday. An official described the horror as a 'mass casualty scene.'

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Local officials released a joint statement saying a tank containing white liquor, a chemical used in the paper pulping process, had ruptured early Tuesday morning.

The tank contained ‘white liquor’, a corrosive substance that consists mainly of sodium hydroxide and sodium sulphide.

El depósito contenía más de 300 mil litros de “licor blanco”, una sustancia altamente corrosiva. Aún hay personas desaparecidas y se investigan las causas del colapso.

Nippon Dynawave Packaging Co. and local first-response agencies confirmed that there had been fatalities.

A tank of 'white liquor' ruptured at the Nippon Dynawave plant in Longview.

Several injured people have been transported to hospitals to be treated for chemical burns.

Multiple people have died, and at least 10 others are believed to be injured following an implosion of a chemical tank in Washington State.

Authorities say no public threat after deadly chemical leak at Washington facility

A chemical tank exploded at a Nippon Dynawave Packaging plant in Washington state. The incident caused multiple deaths and critical injuries. Emergency responders were at the…