Overview of Bhopal Tragedy

In the early hours of December 3, 1984, methylisocyanate (MIC) gas leaked from a production plant owned, managed and operated by Union Carbide India Limited (UCIL) in the central India city of Bhopal. According to government figures, approximately 5,200 people died and several thousand others suffered permanent or partial disabilities.

In 1986, UCC filed a lengthy court document in India detailing the findings of its scientific and legal investigations into the cause of the gas release. Click here to view the Jackson Browning Report.

Engineering consulting firm, Arthur D. Little, Inc., conducted a thorough investigation and reached the same conclusion. Click here to view the Arthur D. Little Report.

About Union Carbide India Limited and Plant History

UCIL was a diversified manufacturing company incorporated in 1934. UCC became one of the first U.S. companies to invest in India when UCC acquired shares in UCIL in 1934. Employing approximately 9,000 people at the height of its business operations, UCIL operated 14 plants in five divisions. UCIL's annual sales were nearly $200 million and UCIL shares were publicly traded on the Calcutta Stock Exchange, with UCC owning just over half the shares. The other stockholders included Indian financial institutions and thousands of private investors in India.

Situated in the central Indian state of Madhya Pradesh, the Bhopal plant was built in 1969 and a production facility was added in 1979. The plant produced pesticides for use in India to help the country’s agricultural sector increase its productivity and contribute more significantly to meeting the food needs of one of the world's most heavily populated regions. The plant never resumed normal operations after the December 1984 gas leak.

Chronology, updated November 2023

chronological timeline of Union Carbide dates and milestones