On April 2, 2019, the KMCO production facility in Crosby, TX, was producing sulfurized isobutylene as a lubrication additive, when they experienced a leak from a fracture in a segment of piping. The leaking material formed a vapor cloud and then found an ignition source, resulting in the death of one employee and serious injuries to two other employees. In this episode, Rob and Molly discuss what happened in detail, cover the contributing factors, and finally touch on the key learnings that other facilities can take away from this tragic event. Find the CSB's final report on this incident at https://www.csb.gov/csb-releases-final-report-into-fatal-2019-explosion-and-fire/.