In pictures: Bhopal - Survivor stories

Suman Dey, a science graduate, was a young technician. He remembers staff were confident of working with the deadly chemical methyl isocyanate.

He was working on the night of the disaster and sounded the alarm to warn people of the gas leak.

He lost his job when the Union Carbide factory closed in 1985 and today runs a small workshop nearby.

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