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

A 3.4 million-litre tank that was about 60% full and contained a corrosive substance imploded, in what officials have called an "absolute tragedy".

A 303,000-litre tank that was about 60% full and contained a corrosive substance imploded, in what officials have called an "absolute tragedy".

Authorities have confirmed that one person died and 9 others were 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 injured at least 10 people, while an undisclosed number of others had been killed or remained missing, authorities said.

A chemical tank rupture at the Nippon Dynawave Packaging facility in Longview, Washington resulted in multiple critical injuries and at least one fatality, ABC News reported on Tuesday, citing authorities.

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…