( February 28, 2025, 3:38 PM EST) -- TACOMA, Wash. — A man who worked as a contractor in a papermill has sued the mill in Washington federal court arguing that he was exposed to toxic fumes from what is known as “black liquor,” a toxic waste byproduct of the paper production process, and contending that the company was negligent in that it failed to ensure a safe workplace environment, resulting in “acute pulmonary issues.”...