Close ExxonMobil expansion adds jobs and boosts economy. ExxonMobil announced Monday that the company would be making a major expansion to the Beaumont Polyethylene Plant. KBMT 6:16 PM. CST November 14, 2016 More Stories Beaumont Police seek Port Arthur man in Tuesday… Jan 17, 2017, 8:32 p.m. Port Arthur man indicted for murder says he was… Jan 18, 2017, 3:52 p.m. North end wreck claims life of Beaumont woman Jan 18, 2017, 1:36 p.m.