Longview Paper Mill Explosion Death Toll Prompts Governor's Warning of State's Deadliest Industrial Disaster

Just after 7:00 a.m. on Monday, May 26, 2026, workers at the Nippon Dynawave Packaging mill in Longview, Washington, were beginning a routine shift change. Fifteen minutes later, a 900,000-gallon spherical tank containing white liquor — a superheated, highly caustic chemical mixture of sodium hydroxide, sodium sulfide, and disodium carbonate used to break wood chips into pulp — collapsed inward on itself [1][3]. The implosion released an estimated 550,000 to 570,000 gallons of the corrosive solution, which reaches temperatures between 300 and 330 degrees Fahrenheit during the kraft milling process [4][6].

Two workers were confirmed dead by Wednesday. Nine others remain unaccounted for, and officials have stated there is "no hope" of finding survivors [2][5]. If the full toll of 11 deaths is confirmed, the Longview disaster will rank as the deadliest industrial accident in Washington state in more than 80 years.

The Death Toll and Its Historical Weight

Governor Bob Ferguson traveled to Longview on May 27 and said at a press conference: "We're bracing ourselves for this being the deadliest industrial tragedy in modern Washington state history" [1][2].

The qualifier "modern" matters. Washington's deadliest disaster involving a workplace remains the 1910 Wellington avalanche, which buried two stranded Great Northern Railway trains in the Cascade Range, killing 96 people — 35 passengers, 58 railroad employees, and three workers in nearby cabins [10]. That event, while catastrophic, was a natural disaster rather than an industrial failure. The last major deadly workplace disaster in the state was a 1943 health center fire in Bremerton that killed 32 people [4].

Source: Historical records, news reports

Data as of May 28, 2026CSV

For comparison, the 1972 Sunshine Mine fire in Kellogg, Idaho — the deadliest hard-rock mining disaster in modern U.S. history — killed 91 miners from carbon monoxide exposure [11]. The Longview implosion's toll of 11, while far smaller in absolute numbers, is significant because such large-scale industrial fatality events in the Pacific Northwest have been rare for decades.

What Happened: The Tank Failure

The tank that failed was approximately two-thirds full at the time of the implosion, containing an estimated 570,000 gallons of white liquor [3][6]. White liquor is the primary chemical agent in kraft milling, the dominant papermaking process worldwide. The solution is highly alkaline — similar in corrosiveness to concentrated bleach — and causes severe chemical burns on contact with skin [8].

The term "implosion" rather than "explosion" is significant. An implosion suggests the tank's structural walls collapsed inward, potentially due to a vacuum condition or structural failure, before the contents burst outward. Officials from the U.S. Chemical Safety and Hazard Investigation Board (CSB), which deployed an investigative team to the site on May 27, have not yet determined the root cause [7][9].

Around the same time as the tank rupture, the facility also experienced a break in a water main on the property [8]. Whether the two events are connected has not been established.

CSB Chairperson Steve Owens stated the agency aims to "determine how it happened and what can be done to prevent something like this from happening again" [9]. The CSB is a nonregulatory body — it does not issue fines or citations but publishes safety recommendations after its investigations conclude.

The Victims

The first confirmed fatality was Gilbert Bernal, 52, who had worked at the mill for more than a decade as an instrument technician [5][12]. His son Eli also worked at the plant and witnessed the implosion. Bernal's daughter told reporters that May 26 was "an everyday, routine day" [3].

Families have publicly identified additional victims, including Jared Ammons, described in a fundraiser as "a loving husband, devoted father, cherished son, and caring brother," and Dillon Miller [5][12]. Brothers Tyler and Brad Covington were also identified as workers at the facility [5].

Seven employees were hospitalized with burns and smoke inhalation injuries. Nine were initially transported to PeaceHealth St. John Medical Center in Longview, with four later transferred to regional hospitals including Legacy Oregon Burn Center [1][2]. One firefighter was treated and released [3].

The recovery of the nine unaccounted workers has been slowed by the hazardous conditions at the site. The remaining approximately 25,000 gallons of white liquor continued to leak as of Wednesday, and bodies require chemical decontamination before they can be turned over to the coroner [2][3].

Who Owns the Mill

Nippon Dynawave Packaging is a U.S. subsidiary of Nippon Paper Industries, Japan's largest paper producer. Nippon Paper acquired the Longview site from Seattle-based Weyerhaeuser in 2016 for $285 million in cash [13]. The parent company, publicly traded on the Tokyo Stock Exchange (TYO: 3863), reported trailing twelve-month revenue of approximately $7.9 billion and has a market capitalization of about $986 million. It operates through roughly 180 subsidiaries and affiliates globally, with approximately 15,145 employees [14].

The Longview facility employs approximately 1,000 workers — about 550 in pulp and paper operations and 450 in the liquid packaging plant, which converts products into an estimated eight billion single-serve beverage containers per year [2][13]. Workers at the plant are represented by the Association of Western Pulp and Paper Workers (AWPPW) [15].

Company president and supervisors were unavailable for comment in the days following the disaster [3]. Nippon Paper's corporate office in Japan said it was "assessing impacts" [13].

A Pattern of Violations

The mill's safety and environmental record has drawn scrutiny in the wake of the disaster. According to KING 5's investigation, the Washington State Department of Labor and Industries (L&I) cited the company four times for safety violations between 2019 and 2025, resulting in cumulative fines of just $3,400 [16]. One 2021 citation for a serious respiratory protection violation carried a $700 fine [13]. State officials emphasized that these citations involved issues such as fall protection and failure to wear face coverings, and "were not connected to chemical process or storage safety" [13][16].

Source: WA Dept of Labor & Industries, EPA

Data as of May 28, 2026CSV

Beyond L&I citations, the facility accumulated at least five formal EPA citations over five years and at least 19 Clean Air Act and Clean Water Act violations [15]. The mill also experienced multiple fires: a July 2023 blaze involving wood chip piles caused unhealthy air quality in Portland, Oregon, roughly 50 miles to the south [7]. An August 2025 two-alarm fire destroyed a warehouse and locomotive repair shop operated by Patriot Rail on Nippon Dynawave property [13].

Two L&I investigations were already open at the time of the implosion. One, opened two months prior, stemmed from an anonymous complaint about a valve on a tank holding aqua ammonia, a highly corrosive chemical. The other was opened in May 2026 after a complaint about a failed drain creating a sinkhole [16]. Neither investigation was related to the white liquor tank that ruptured.

The question of whether these prior citations and complaints constitute a meaningful warning pattern — or merely routine findings common to large industrial facilities — remains contested. State officials have pointed out that none of the documented violations directly involved the chemical storage systems that failed. Critics counter that the cumulative record, including 19 environmental violations and multiple fires, suggests a broader culture of inadequate maintenance and oversight [15][16].

Washington's Regulatory Framework

Washington is one of roughly two dozen states that operate their own workplace safety program rather than relying on federal OSHA. The state's Division of Occupational Safety and Health (DOSH), housed within the Department of Labor and Industries, conducts inspections and enforces safety rules [17]. DOSH inspectors can arrive without advance notice and are required to investigate work-related deaths, serious injuries, and employee complaints [17].

The effectiveness of this system is now under examination. The $3,400 in total fines levied against a facility owned by a multibillion-dollar parent company over a six-year period has prompted questions about whether penalties are calibrated to deter violations at large industrial operations. Nationally, OSHA's maximum penalty for a serious violation is $16,131 per violation as of 2024, with willful violations carrying fines up to $161,323 [17].

Detailed comparative data on Washington's inspector-to-facility ratio, enforcement budget, and inspection frequency relative to Oregon, California, and national OSHA averages was not immediately available in the days following the disaster. This is an area where the ongoing CSB and state investigations may produce relevant findings.

Environmental Fallout

The chemical spill reached the Columbia River. Testing confirmed contamination, and officials recovered approximately a dozen dead carp from the waterway [3]. Public health authorities said no negative health impacts to the city's air quality or drinking water system had been identified, but urged residents to avoid surrounding dikes and ditches [2].

The environmental dimension adds another layer to the facility's regulatory history, given its 19 prior Clean Air and Clean Water Act violations [15].

Workers' Compensation and Legal Protections

Under Washington's Industrial Insurance Act, families of workers killed on the job are entitled to several categories of benefits [18][19]. Survivors receive an immediate lump-sum payment of up to 200 percent of the state's average monthly wage. Ongoing pension benefits are calculated as a percentage of the deceased worker's wages: 60 percent for a surviving spouse with one child, scaling up to 66 percent for a spouse with four or more children [18].

Children can receive benefits until age 18, or until age 23 if enrolled as full-time students. Disabled children may qualify for lifelong benefits. Funeral and burial costs are covered up to 200 percent of the state average monthly wage [18][19].

These protections, while among the more comprehensive state workers' compensation systems in the country, have limitations. Benefits are capped as a percentage of wages, which means lower-paid workers' families receive proportionally less. Families may also pursue third-party lawsuits against equipment manufacturers, maintenance contractors, or other entities if negligence outside the employer-employee relationship contributed to the disaster — a legal avenue that has produced substantially larger settlements in comparable cases in other states.

GoFundMe campaigns and community meal trains were launched within hours of the disaster to provide immediate support to affected families [5].

Accident or Preventable Failure?

The central question — whether this disaster was an unforeseeable mechanical failure or a preventable consequence of inadequate maintenance and oversight — cannot yet be answered with certainty. The CSB investigation is in its earliest stages, and no preliminary technical findings have been released [9].

Several facts cut in different directions. On one hand, the state's documented safety citations at the facility were unrelated to chemical storage tanks, and officials have stated that prior inspections did not flag the white liquor tank as a concern [13][16]. The kraft milling process is used at hundreds of facilities worldwide, and catastrophic tank failures of this nature are rare.

On the other hand, the facility's 28 combined safety, environmental, and regulatory citations over recent years, the two open investigations at the time of the disaster, the anonymous complaint about a chemical valve two months prior, and the series of fires suggest a facility where maintenance and safety protocols were under strain [15][16]. Whether any of these factors are connected to the tank failure is precisely what investigators will need to determine.

Rep. Marie Gluesenkamp Perez, whose congressional district includes Longview, visited the site and acknowledged the tension between accountability and the community's economic dependence on the mill. She said the federal investigation should not become "the last straw for a viable mill," noting that hundreds of families rely on the plant for their livelihoods [15].

A Community in Grief

Hundreds of residents gathered at R.A. Long Park on the evening of May 26 for a candlelight vigil [3]. Longview, a city of roughly 40,000 in southwest Washington along the Columbia River, has been a mill town for a century. The Nippon Dynawave facility is one of its largest employers.

Rep. Gluesenkamp Perez said that "first responders...saw unthinkable horrors yesterday" [3]. The 46 Washington National Guard members deployed to the site, along with 10 civil support team members conducting air monitoring and 20 additional Guard members assisting with decontamination, underscore the scale and hazard of the ongoing recovery operation [2][3].

Governor Ferguson activated state mobilization and put emergency management in contact with local responders [1]. The National Guard deployment was among the largest for a non-natural-disaster event in recent state history.

What Comes Next

The CSB investigation will take months, possibly longer, to produce findings. Parallel investigations by the Washington Department of Labor and Industries and potentially the EPA will examine regulatory compliance. Civil litigation against Nippon Dynawave and its parent company appears likely.

For the families of the 11 workers believed killed — and for the seven survivors recovering from burns and chemical exposure — the answers to why a routine Monday morning shift became a mass-casualty event remain, for now, locked inside a ruptured tank and a pile of regulatory filings that, individually, raised no alarms loud enough to prevent what happened.