Alkaline Burns Cause Most Deaths in Longview Paper Mill Explosion

Alkaline Burns Cause Most Deaths in Longview Paper Mill Explosion

Society

The Nippon Dynawave paper mill in Longview, Washington, suffered a chemical tank implosion that killed workers and injured dozens, according to KOMO. OPB noted that emergency responders, including Longview firefighters and Cowlitz County crews, arrived quickly and transported victims to PeaceHealth St. John and Southwest Medical Centers. CBS News reported that initial accounts listed one death and nine workers missing, prompting a large search effort.

Oregon Public Broadcasting later said the death toll rose to two while nine additional workers were presumed dead. KATU subsequently confirmed that all nine missing workers had been recovered and identified, and NBC News announced the final count of eleven fatalities. The Cowlitz County Coroner’s Office concluded that alkaline chemical burns caused ten of the deaths and ruled all fatalities accidental, KATU reported.

Actors

Nippon Dynawave Longview Fire Department Washington State Department of Ecology PeaceHealth St. John Medical Center PeaceHealth Southwest Medical Center Cowlitz County firefighters

Locations

Nippon Dynawave facility

Articles

June 11, 2026
1 total
Coroner attributes 10 deaths in Longview paper mill explosion to alkaline burns
Coroner attributes 10 deaths in Longview paper mill explosion to alkaline burns

KATU • 11 Jun 22:06

The Cowlitz County Coroner’s Office concluded that alkaline chemical burns caused most of the fatalities in the May 26 Nippon Dynawave tank implosion, ruling all deaths accidental.

Credibility 78% Prop. 10% Center
May 31, 2026
3 total
Chemical Tank Collapse at Longview Paper Mill Results in 11 Fatalities
Chemical Tank Collapse at Longview Paper Mill Results in 11 Fatalities

KOMO • 31 May 05:49

A chemical tank failure at a paper mill in Longview has resulted in the deaths of 11 workers, marking it as one of the deadliest workplace incidents in recent US history.

Credibility 85% Prop. 10% Center
Final Victim Identified in Washington Paper Mill Explosion
Final Victim Identified in Washington Paper Mill Explosion

NBC News • 31 May 02:03

Officials confirmed the recovery of all missing victims from a recent paper mill explosion in Longview, Washington, which resulted in 11 fatalities.

Credibility 90% Prop. 5% Center
All nine missing workers identified after Nippon paper mill explosion
All nine missing workers identified after Nippon paper mill explosion

KATU • 31 May 00:11

Officials have confirmed the recovery and identification of all nine workers missing following the explosion at the Nippon Dynawave paper mill in Longview, Washington.

Credibility 85% Prop. 10% Center
May 28, 2026
2 total
Longview Paper Mill Disaster Increases Death Toll Amid Ongoing Recovery Efforts
Longview Paper Mill Disaster Increases Death Toll Amid Ongoing Recovery Efforts

Oregon Public Broadcasting - OPB • 28 May 23:38

The death toll from the chemical tank rupture at the Nippon Dynawave mill in Longview has risen to eight, with three more individuals presumed dead as recovery efforts continue in hazardous conditions.

Credibility 90% Prop. 10% Center
Second Fatality Confirmed in Nippon Dynawave Chemical Blast
Second Fatality Confirmed in Nippon Dynawave Chemical Blast

KATU • 28 May 02:20

A chemical explosion at the Nippon Dynawave facility in Longview, Washington, has resulted in a second confirmed death, with ongoing recovery efforts amid environmental concerns.

Credibility 85% Prop. 10% Center
May 27, 2026
4 total
Tragedy Strikes Longview Paper Mill After Chemical Tank Rupture
Tragedy Strikes Longview Paper Mill After Chemical Tank Rupture

Oregon Public Broadcasting - OPB • 27 May 21:58

The death toll from a chemical tank rupture at Nippon Dynawave Packaging Co. in Longview has reached two, with nine others presumed dead as investigations begin into the incident.

Credibility 90% Prop. 10% Center
Search efforts ongoing for nine workers missing after tank explosion at Washington paper mill
Search efforts ongoing for nine workers missing after tank explosion at Washington paper mill

The Guardian • 27 May 16:02

Rescue operations are underway at a Longview, Washington paper mill where a tank explosion killed one and left nine workers missing. Authorities have indicated that expectations of survivors are low.

Credibility 90% Prop. 10% Center
Fatality and Missing Workers Following Chemical Tank Incident at Washington Mill
Fatality and Missing Workers Following Chemical Tank Incident at Washington Mill

CBS News • 27 May 13:13

One person has died and nine workers are missing after a chemical tank imploded at a paper mill in Longview, Washington, leading to multiple injuries among employees and responders.

Credibility 90% Prop. 5% Center
Fatal Incident at Longview Paper Mill Leads to Injuries and Hazards
Fatal Incident at Longview Paper Mill Leads to Injuries and Hazards

The New York Times • 27 May 05:03

One fatality and injuries to nine others were reported following a chemical tank rupture at the Nippon Dynawave Packaging Company in Longview, Washington, where hazardous material poses ongoing risks.

Credibility 90% Prop. 5% Center
May 26, 2026
3 total
Fatal explosion at Longview paper mill results in multiple injuries
Fatal explosion at Longview paper mill results in multiple injuries

The Seattle Times • 26 May 19:45

A significant chemical explosion at the Nippon Dynawave Packaging facility in Longview has led to several deaths and numerous injuries. Authorities have stated there is no immediate public health threat.

Credibility 85% Prop. 5% Center
Chemical Tank Implosion at Washington Paper Mill Results in Fatalities and Injuries
Chemical Tank Implosion at Washington Paper Mill Results in Fatalities and Injuries

Oregon Public Broadcasting - OPB • 26 May 18:57

A chemical tank implosion at the Nippon Dynawave Packaging Company in Longview, Washington, has resulted in one confirmed death and multiple injuries, with several individuals transported to local hospitals for treatment.

Credibility 85% Prop. 5% Center
Chemical Explosion at Longview Paper Mill Leads to Multiple Injuries
Chemical Explosion at Longview Paper Mill Leads to Multiple Injuries

KOMO • 26 May 16:11

A significant chemical explosion at the Nippon Dynawave plant in Longview has resulted in multiple injuries, prompting a swift response from emergency services.

Credibility 85% Prop. 5% Center