The Kentucky agency that oversees boiler safety claims the plant operated a vessel that exploded without a proper inspection permit. The Kentucky Department of Housing, Buildings and Construction found that the cooker that exploded was installed without a required permit that would have triggered a state inspection. https://www.wdrb.com/wdrb-investigates/criminal-charges-could-apply-to-inspection-failure-before-fatal-louisville-plant-explosion-official-says/article_704fb426-e566-11ef-a8a2-87af2efe4771.html...