2010 Puebla oil pipeline explosion
Encyclopedia
The 2010 Puebla oil pipeline explosion was a large oil pipeline explosion that occurred at 5:50 am CST on December 19, 2010, in the city of San Martín Texmelucan de Labastida
San Martín Texmelucan de Labastida
San Martín Texmelucan de Labastida is a city in the west-central part of the state of Puebla in Mexico, adjacent to the southwest corner of the state of Tlaxcala. It is the municipal seat of the municipality of San Martín Texmelucan...

, Puebla
Puebla
Puebla officially Estado Libre y Soberano de Puebla is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided in 217 municipalities and its capital city is Puebla....

, Mexico
Mexico
The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

. The pipeline, running from Tabasco
Tabasco
Tabasco officially Estado Libre y Soberano de Tabasco is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided in 17 municipalities and its capital city is Villahermosa....

 to Hidalgo, was owned by the Pemex
Pemex
Petróleos Mexicanos or Pemex is a Mexican state-owned petroleum company. As of 2010, with a total asset worth of $415.75 billion, it is the second non-publicly listed largest company in the world by total market value, and Latin America's second largest enterprise by annual revenue as of 2009...

 petroleum company, and exploded after thieves from the Los Zetas
Los Zetas
Los Zetas is the second most powerful drug cartel in Mexico and considered by the U.S. Drug Enforcement Administration as the most violent drug cartel and paramilitary enforcement group in Mexico...

 drug cartel
Drug cartel
Drug cartels are criminal organizations developed with the primary purpose of promoting and controlling drug trafficking operations. They range from loosely managed agreements among various drug traffickers to formalized commercial enterprises. The term was applied when the largest trafficking...

 attempted to siphon off the oil. The gas explosion
Gas explosion
A gas explosion is an explosion resulting from a gas leak in the presence of an ignition source. The principal explosive gases are natural gas, methane, propane and butane, because they are widely used for heating purposes. However, many other gases like hydrogen, are combustible and have caused...

 and resulting oil fire killed 29 people, including thirteen children, and injured 52. Some of the flames in the fire became ten metres high, and the smoke towered over the city. The blast also damaged 115 homes, completely destroying 32 of them, and prompted the evacuation of 5,000 residents. Firefighters eventually controlled the blaze, but electricity and water remained cut following the explosions, and the military was deployed to the site. Mexican President Felipe Calderón
Felipe Calderón
Felipe de Jesús Calderón Hinojosa is the current President of Mexico. He assumed office on December 1, 2006, and was elected for a single six-year term through 2012...

 visited the explosion site on the day of the incident to offer condolences to the victims' families. The fire was one of the deadliest in Mexican history, largely destroying an area of five-kilometre radius, and some oil may have polluted the Atoyac River.

Background

The Los Zetas
Los Zetas
Los Zetas is the second most powerful drug cartel in Mexico and considered by the U.S. Drug Enforcement Administration as the most violent drug cartel and paramilitary enforcement group in Mexico...

 gang, a paramilitary
Paramilitary
A paramilitary is a force whose function and organization are similar to those of a professional military, but which is not considered part of a state's formal armed forces....

 group involved in the ongoing Mexican Drug War
Mexican Drug War
The Mexican Drug War is an ongoing armed conflict taking place among rival drug cartels who fight each other for regional control, and Mexican government forces who seek to combat drug trafficking. However, the government's principal goal has been to put down the drug-related violence that was...

, was blamed for the explosion. Throughout 2010, drug-related conflicts had killed 12,456 people. In 2008, Pemex reported 9.3 billion pesos ($750 million USD) of oil lost to thieves. Previously, close to sixty illegal tapping incidents occurred near the explosion site due to thieves stealing the oil. Much of the stolen oil is often trafficked to the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

.

Investigation

Felipe Calderón ordered an official investigation into the incident. A hole was found at the pipeline, and several bodies lay near the initial site of the explosion. The cause of the spark that led to the explosion is still unknown. The investigation is to include an assessment of the environmental impact of the explosion, including the pollution of downstream reservoirs. Mechanical failure
Mechanical overload
The failure or fracture of a product or component in a single event is known as mechanical overload. It is a common failure mode, and may be contrasted with fatigue, creep, rupture, or stress relaxation. The terms are used in forensic engineering and structural engineering when analysing product...

was not ruled out as a possible cause of the oil leak despite evidence of theft and tampering of the pipeline. The pipeline was re-opened on December 22.
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