Qualla: The Bhopal Disaster: The Night a Pesticide Plant Killed a City

The Bhopal Disaster: The Night a Pesticide Plant Killed a City: Introduction

Thu, 15 Jan 2026 00:00:00 GMT

Photo credit Photograph taken by Template:Wtu, CC BY-SA 1.0. Just after midnight on December 3, 1984, a storage tank at the Union Carbide pesticide plant in Bhopal, India, began leaking methyl isocyanate - one of the most toxic industrial chemicals in existence. The wind carried the gas into the densely populated neighborhoods surrounding the plant. People woke choking, vomiting, unable to see. They ran blind through the streets, trampling neighbors, falling where they stood. By dawn, at least 3,800 people were dead. The final toll - including those who died from exposure-related illnesses in the following years - may exceed 16,000. It remains the world's worst industrial disaster, and the site remains contaminated to this day.

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Image: Photograph taken by Template:Wtu | CC BY-SA 1.0

The Bhopal Disaster: The Night a Pesticide Plant Killed a City: The Plant

Thu, 15 Jan 2026 00:00:00 GMT

Photo credit Suyash.dwivedi, CC BY-SA 4.0. The Union Carbide India Limited plant in Bhopal manufactured Sevin, a pesticide used across India's agricultural economy. The plant stored methyl isocyanate (MIC), an extremely reactive chemical that is toxic at concentrations as low as 5 parts per million. MIC reacts violently w...

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Image: Suyash.dwivedi | CC BY-SA 4.0

The Bhopal Disaster: The Night a Pesticide Plant Killed a City: The Leak

Thu, 15 Jan 2026 00:00:00 GMT

Photo credit Suyash.dwivedi, CC BY-SA 4.0. Sometime in the evening of December 2, water entered Tank 610, which contained 42 tons of MIC. The water reacted with the chemical, generating heat. The temperature inside the tank rose rapidly. Pressure built. Just after midnight, a relief valve opened, venting MIC gas directly ...

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Image: Suyash.dwivedi | CC BY-SA 4.0

The Bhopal Disaster: The Night a Pesticide Plant Killed a City: Flight Context

Thu, 15 Jan 2026 00:00:00 GMT

Photo credit Suyash Dwivedi, CC BY-SA 4.0. Bhopal (23.26N, 77.41E) is the capital of Madhya Pradesh state in central India. Raja Bhoj Airport (VABP) is 12km northwest of the city center. The Union Carbide plant site is in the northern part of the city, near the old city area. The plant remains standing but abandoned. Bhopal is also known for its lakes and as an educational center. Weather is tropical - hot summers, monsoon season June-September.

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Image: Suyash Dwivedi | CC BY-SA 4.0

The Bhopal Disaster: The Night a Pesticide Plant Killed a City: The Toll

Thu, 15 Jan 2026 00:00:00 GMT

Photo credit Arian Zwegers, CC BY 2.0. The immediate death toll was at least 3,800, though some estimates exceed 8,000 for the first few days. Over 500,000 people were exposed to the gas. In the following decades, tens of thousands more would die from exposure-related illnesses - respiratory disease, cancer, neurologi...

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Image: Arian Zwegers | CC BY 2.0

The Bhopal Disaster: The Night a Pesticide Plant Killed a City: The Aftermath

Thu, 15 Jan 2026 00:00:00 GMT

Photo credit Gondola foundation, CC BY-SA 4.0. Union Carbide's CEO Warren Anderson flew to India and was briefly arrested, then allowed to leave the country. He never returned to face charges. In 1989, Union Carbide settled with the Indian government for $470 million - roughly $500 per victim. The settlement was widely critic...

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Image: Gondola foundation | CC BY-SA 4.0