Harvey forces ExxonMobil to close Baytown refining complex

US petroleum giant ExxonMobil said Sunday it was temporarily closing its enormous refinery in Baytown, Texas, after flooding caused by monster storm Harvey had led to “operational issues.” “We are in the process of a safe and systematic shutdown of operations,” a company statement said. ExxonMobil said it was “taking all precautions” to ensure workers’ safety…