State regulators have launched a formal investigation into a catastrophic chemical tank implosion at the Nippon Dynawave ...

At least one person has died, nine people are injured and nine employees remain unaccounted for after a deadly chemical tank rupture Tuesday at a paper plant in Washington state, fire officials said.

In a joint statement, Nippon Dynawave Packaging Co. and local law enforcement said the tank's rupture caused "multiple critical injuries" as well as fatalities. Authorities said some victims suffered ...

The implosion of a liquor storage tank at Nippon Dynawave mill, which killed several employees, raises urgent safety concerns as investigators continue to review.