One Dead and Nine Missing After Major Chemical Explosion at Washington Paper Mill
Emergency responders are struggling to stabilize a 900,000-gallon tank of corrosive white liquor following a fatal rupture in Longview.
Primary source: BBC World News. Full source links, newsroom standards, and correction details are below.
Fast summary
Start here
- One person was killed and nine others remain missing after a massive tank rupture at the Nippon Dynawave Packaging facility.
- The tank involved contained approximately 900,000 gallons of white liquor, a highly corrosive chemical used in paper manufacturing.
- Ten individuals, including nine employees and one firefighter, were hospitalized with injuries ranging from minor to critical severe.

What happened
A chemical explosion at the Nippon Dynawave Packaging facility in Longview, Washington, killed at least one person and left nine others missing on Tuesday morning. The blast occurred at approximately 07:15 PDT at the mill, which is located about 130 miles south of Seattle. The company attributed the incident to a rupture of a tank containing 'white liquor,' a corrosive chemical used to process wood into paper pulp.
What's new in this update
The scale of the hazard has been significantly upwardly revised. While investigators initially believed the tank held 80,000 gallons of chemicals, the Longview Fire Department later confirmed the tank held approximately 900,000 gallons. Recovery efforts are currently stalled because the damaged tank remains structurally unstable, creating hazardous conditions that prevent emergency personnel from entering certain areas of the site.
Key details
In addition to those missing and deceased, ten people were transported to hospitals with injuries described as 'critical severe to minor,' including chemical burns and inhalation issues. The injured include nine mill employees and one firefighter. White liquor is an alkaline solution containing sodium hydroxide and sodium sulfide; responders are working to stabilize the remaining 90,000 gallons that may still be inside the damaged vessel.
Background and context
The Nippon Dynawave Packaging facility is a major employer in the region with roughly 1,000 workers, producing items such as liquid packaging board and printer paper. The site has faced previous safety challenges, including a massive fire in July 2023 involving woodpiles that burned for several days. Washington Governor Bob Ferguson has dispatched state ecology workers to the site to assist local authorities.
What to watch next
The focus remains on reinforcing the damaged tank to prevent further spills or collapse. Once the site is stabilized, recovery operations for the nine missing individuals will resume. Despite the severity of the explosion at the plant, officials have stated that the incident does not pose a threat to the broader community and no evacuation orders have been issued for the Longview area.
Why this matters
The incident represents a major industrial disaster involving a massive volume of corrosive chemicals at a facility with a recent history of safety incidents.
Reader context
This story belongs to Northstar Herald's world coverage, with related entities including Nippon Dynawave Packaging, Longview, Industrial Accident, Chemical Safety. The report is based on BBC World News source material.
Related coverage
Why it matters
The incident represents a major industrial disaster involving a massive volume of corrosive chemicals at a facility with a recent history of safety incidents.
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Follow this story through the topic hub, more world coverage, and the latest updates.
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