(Geismer, LA)  --  One person is dead and dozens more are injured following today's explosion at a Louisiana chemical plant.  Officials recovered the body from the scene at the Williams Olefins chemical plant, and the search continues for more possible victims.  About a dozen victims were airlifted from the scene.  Residents living near the plant are being advised to shelter in place, but officials do not believe there is a risk to the public.  There's still no word on what caused the explosion.