The Petroleos Mexicanos administrative building stands in the... News PhotoAdministrator,Built Structure,Business,Emergencies and Disasters,Exploding,Finance,Fuel and Power Generation,Mexico,Mexico City,North America,Petrol,Petroleos Mexicanos,Position,Security,Station,The Americas,The Media,USA,VerticalPhotographer Collection: Bloomberg 2013 BloombergThe Petroleos Mexicanos (Pemex) administrative building stands in the distance past one of the company's gas stations in Mexico City, Mexico, on Friday, Feb. 1, 2013. Pemex is stepping up security at oil production facilities as authorities investigate a blast that killed at least 33 people at the state-owned company’s headquarters in Mexico City yesterday. Photographer: Susana Gonzalez/Bloomberg via Getty Images