
FILE PHOTO: Flames shoot out of one of the flare stacks at the Petroleos Mexicanos (Pemex) Miguel Hidalgo Refinery in Tula de Allende, Mexico, on Thursday, March 6, 2014. Oil extended losses below $60 a barrel amid speculation that OPEC's biggest members will defend market share against U.S. shale producers. Photographer: Susana Gonzalez/Bloomberg
Susana Gonzalez/Bloomberg