Summary (tl;dr)

A chemical tank implosion at the Nippon Dynawave Packaging Co. paper mill in Longview, Washington, on Tuesday, May 26, 2026, has resulted in at least one confirmed death, nine missing employees feared dead, and nine others, including a firefighter, injured with chemical burns and inhalation issues.

Essential Background

The Nippon Dynawave Packaging Co. facility in Longview, Washington, is a kraft pulp and paper mill and liquid packaging plant that employs approximately 1,000 people. The incident involved a tank containing "white liquor," a highly corrosive chemical solution primarily composed of sodium hydroxide and sodium sulfide, which is integral to the paper-making process for breaking down wood chips into pulp. The facility has a history of industrial incidents, including a large fire in July 2023.

The Full Story

On Tuesday morning, May 26, 2026, around 7:15-7:30 a.m. local time, a large chemical tank at the Nippon Dynawave Packaging Co. facility in Longview, Washington, imploded and ruptured. The tank, initially believed to hold 80,000 gallons but later estimated to contain closer to 900,000 gallons of white liquor, caused a "mass casualty scene." One fatality has been confirmed by the Longview fire department, and nine plant employees remain unaccounted for, with officials referring to the situation as a recovery effort, indicating little hope for rescue. Eight employees and one firefighter sustained injuries, some severe, including chemical burns and inhalation injuries, requiring transport to hospitals in Longview and Vancouver, Washington, with some transferred to the Legacy Oregon Burn Center in Portland, Oregon. Recovery operations were suspended overnight due to the tank's instability and the presence of remaining caustic liquid but are expected to resume Wednesday morning to stabilize the tank and remove the approximately 90,000 gallons of white liquor still inside.

Why It Matters

This incident is a significant industrial tragedy with severe human cost, highlighting critical concerns about worker safety in chemical processing plants. The confirmed death and the feared loss of nine additional workers have devastated the local community, which has a long-standing relationship with the paper and lumber industries. Although authorities have stated there is no immediate threat to the wider public, the spill of white liquor into a drainage ditch has prompted the state ecology department to evaluate potential environmental impacts. The ongoing instability of the ruptured tank poses continued risks for emergency responders and complicates recovery efforts, drawing attention to industrial safety protocols and regulatory oversight.

Geographic Location

• Nippon Dynawave Packaging Co. facility, Longview, Cowlitz County, Washington, United States (chemical tank implosion and rupture)
• PeaceHealth St. John Medical Center, Longview, Cowlitz County, Washington, United States (injured workers received)
• Legacy Oregon Burn Center, Portland, Multnomah County, Oregon, United States (critically injured workers transferred)
• Longview Fire Department, Longview, Cowlitz County, Washington, United States (emergency response coordination)