Washington was bracing for the state’s “deadliest industrial tragedy,” Gov. Bob Ferguson said Wednesday following the rupture of a tank at the Nippon Dynawave plant.

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

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

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.

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.

Authorities said some victims had suffered burns or inhalation injuries and there was no immediate threat to the public.

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

An implosion at a manufacturing facility in Washington killed multiple people and injured 10 others, including a firefighter.

An implosion at a manufacturing facility in Washington killed multiple people and injured 10 others, including a firefighter.

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…

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Nippon Dynawave Packaging Co. is a pulp and paper mill and liquid packaging plant along the Columbia River in Longview, Washington.

A chemical tank implosion at a Washington state mill has resulted in one death and nine missing, prompting ongoing recovery efforts.

A number of people have died and several have been badly injured after a chemical leak at a plant in the northwestern U.S. state of Washington, officials said Tuesday.