A serious fire broke out at TPC’s Port Neches, Texas, 425,000 t/yr butadiene (BD) facility on 27 November, prompting shifts in the entire supply chain. The reaction involved cracker operators with crude C4 that is typically shipped to TPC’s Port Neches or Houston facilities; BD contract customers; other BD producers who worked to fill the void; companies who stored material in TPC’s onsite tanks; and finally, those who were dependent on an industrial gas facility that was also onsite at Port Neches.