Nearly 32 hours after a tanker carrying formalin overturned on Kisan Path in Lucknow, the chemical was neutralised around 3am on Wednesday following a challenging, round-the-clock operation. Formalin tanker overturns on Lucknow’s Kisan Path; fumes cause eye and breathing irritation. One carriageway and service road shut as cleanup continues. A formalin-laden truck overturned in Lucknow due to a tyre burst.