WASHINGTON, D.C. — The US Chemical Safety and Hazard Investigation Board (CSB) released an update on the agency’s ongoing investigation into the January 27, 2026, fatal release of highly toxic hydrogen sulfide. The incident resulted in the deaths of two young employees. …Ten additional employees were also exposed to the toxic hydrogen sulfide gas. CSB Chairperson Steve Owens said, “The two young employees who died were not provided with personal hydrogen sulfide monitors that would have alerted them to the presence of the toxic gas, and there were no hydrogen sulfide detectors installed in the building where the release occurred. The company also did not keep track of who was in the building and where they were during this horrible event. …”Woodland Pulp was aware of the hazards associated with hydrogen sulfide gas forming in the acid sewer piping, but despite this knowledge, the company did not have adequate systems in place.”