Rigs_and_VesselsPemex piles on pain for Mexico's contractorsFears contractual suspensions and deferred payments could tip scores of suppliers into bankruptcyCrunchtime: Pemex chief executive officer Octavio Romero Oropeza is in cost-cutting mode after trying to adhere to expansionary plans imposed by Mexico's President Andres Manuel Lopez Obrador (in background)Photo: REUTERS/SCANPIXGareth ChetwyndLondon