Newly released security camera footage captures the moment a 900,000-gallon chemical storage tank failed at the Nippon Dynawave Packaging Company in Longview, Washington on May 26, 2026, killing 11 workers. Surveillance video captures the violent implosion of a massive tank at a Washington state paper mill, an industrial disaster that killed workers and tore through part of the Nippon Dynawave facility in May. The video shows the white liquor tank at the Longview mill suddenly collapse, unleashing the deadly force of the implosion and revealing the scale of the destruction in its immediate aftermath. The video, obtained via a records request, was recorded from a surveillance camera located in the Station 6 Central Maintenance parking lot. The tank is barely visible at the top of the frame. Seconds into the recording, the tank rupture occurs. The tank can be seen collapsing on one side, followed by a large gaseous cloud. Minutes later, that cloud and a flow of white liquor slowly fill the parking lot. The catastrophe unfolded on the morning of May 26. Eleven people were killed, making it the deadliest industrial accident in Washington state history. The ruptured tank spilled up to 570,000 gallons of white liquor, a strong alkaline liquid made mostly of sodium hydroxide and sodium sulfide used in the papermaking process to dissolve wood chips.