Union Carbide gas leak
Memorial by Dutch artist Ruth Kupferschmidt for those killed and disabled by the 1984 toxic gas release
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| Date | 2 December 1984 – 3 December 1984 |
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| Location | Bhopal, Madhya Pradesh |
| Coordinates | 23°16′51″N 77°24′38″E / 23.28083°N 77.41056°ECoordinates: 23°16′51″N 77°24′38″E / 23.28083°N 77.41056°E |
| Also known as | Bhopal gas tragedy |
| Cause | Methyl Isocyanate leak from Union Carbide India Limited storage tank |
| Deaths | At least 3,787; over 16,000 claimed |
| Non-fatal injuries | At least 558,125 |
The Bhopal disaster, also referred to as the Bhopal gas tragedy, was a gas leak incident in India, considered the world's worst industrial disaster.
It occurred on the night of 2–3 December 1984 at the Union Carbide India Limited (UCIL) pesticide plant in Bhopal, Madhya Pradesh. Over 500,000 people were exposed to methyl isocyanate (MIC) gas and other chemicals. The highly toxic substance made its way into and around the shanty towns located near the plant.
Estimates vary on the death toll. The official immediate death toll was 2,259. The government of Madhya Pradesh confirmed a total of 3,787 deaths related to the gas release. A government affidavit in 2006 stated that the leak caused 558,125 injuries, including 38,478 temporary partial injuries and approximately 3,900 severely and permanently disabling injuries. Others estimate that 8,000 died within two weeks, and another 8,000 or more have since died from gas-related diseases.
The cause of the disaster remains under debate. The Indian government and local activists argue that slack management and deferred maintenance created a situation where routine pipe maintenance caused a backflow of water into a MIC tank, triggering the disaster. Union Carbide Corporation (UCC) contends water entered the tank through an act of sabotage.
The owner of the factory, UCIL, was majority owned by UCC, with Indian Government-controlled banks and the Indian public holding a 49.1 percent stake. In 1989, UCC paid $470m ($907m in 2014 dollars) to settle litigation stemming from the disaster. In 1994, UCC sold its stake in UCIL to Eveready Industries India Limited (EIIL), which subsequently merged with McLeod Russel (India) Ltd. Eveready ended clean-up on the site in 1998, when it terminated its 99-year lease and turned over control of the site to the state government of Madhya Pradesh. Dow Chemical Company purchased UCC in 2001, seventeen years after the disaster.
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