A massive storage tank collapse at a paper mill in Longview, Washington, has released 3.4 million liters of highly caustic 'white liquor,' killing 11 workers. The incident at Nippon Dynawave Packaging Company underscores critical safety risks in pulp and paper chemical handling, with potential implications for global supply chains reliant on this packaging producer.
Incident overview
On Tuesday morning during a shift change, a 900,000-gallon (3.4 million liters) tank containing white liquor ruptured at the Nippon Dynawave Packaging Company facility in Longview, Washington. The spill released a highly caustic solution of sodium hydroxide and sodium sulfide, used to break down wood chips into pulp for paper production. Rescue teams recovered the bodies of nine missing employees, bringing the total death toll to 11, according to U.S. authorities.
Company and supply-chain context
Nippon Dynawave Packaging, a subsidiary of Japan's Nippon Paper Group, produces 8 billion single-use containers annually, supplying customers across North America, Asia, and globally. The accident may disrupt output of these packaging materials, affecting downstream buyers in food service, retail, and industrial packaging sectors that rely on consistent supply.
What buyers should watch
Importers and distributors of paper packaging should monitor potential production halts or reduced capacity at the Longview mill. Any prolonged shutdown could tighten supply of containerboard and related products, especially for North American and Asian markets. Buyers may need to seek alternative sources or adjust inventory strategies in the near term.
Compliance and logistics signals
Chemical supply-chain professionals should note the hazardous nature of white liquor and the risks of bulk storage and transport of caustic substances. This incident may prompt stricter safety audits at pulp and paper facilities globally, potentially affecting logistics timelines and insurance costs for chemical shipments in the region.
Source: Read the original report | Published: May 31, 2026