An explosion ripped through a petrochemical plant on the southern coast of the Gulf of Mexico on Wednesday, killing three people, injuring more than 100 and sending a toxin-filled cloud into the air, officials said. State oil company Petroleos Mexicanos, or Pemex, said 136 workers were hurt and three died in the midafternoon blast in the industrial port city of Coatzacoalcos. Eighty-eight of the injured remained...
