**Discrepancies in Mercury Levels Raise Concerns Over Union Carbide Waste Burning in Pithampur**

Bhopal (Madhya Pradesh): A renewed debate has surfaced regarding the burning of Union Carbide Corporation (UCC) chemical waste, following reports from two separate pollution control bodies presenting vastly different figures on the quantity of heavy metals—mercury in particular—remaining after incinerating 350 metric tons (MT) of waste. This process resulted in 900 MT of ash at Pithampur.

The state government’s affidavit, filed in the High Court at Jabalpur earlier this month, is based on a report from the regional laboratory of the Madhya Pradesh Pollution Control Board (MPPCB) in Indore. In stark contrast, a joint affidavit submitted by the Central Pollution Control Board (CPCB) and the Council of Scientific and Industrial Research–National Environmental Engineering Research Institute (CSIR-NEERI) indicates significantly higher levels of mercury.

According to the CPCB report on the trial burn, mercury content in the reactor residue ranged from 261 to 615 mg/kg, with the excavated waste containing mercury levels between 152 and 754 mg/kg. Conversely, the state government’s affidavit reported mercury concentrations as markedly lower, between 0.09 and 1.5 mg/kg.

Rachna Dhingra of the Bhopal Group for Information and Action, an organization working with victims of the Bhopal gas tragedy, highlighted the contradictions: “Both the reports are contradictory. The government affidavit, filed in mid-September this year, and the CPCB report after the UCC trial have a huge gap. Where did the mercury disappear? It is now up to the government to reply in the High Court.”

**“Mercury Is Toxic”**

Hamidia Hospital Medical Superintendent Dr. Sumit Tandon told the Free Press, “Mercury is poisonous and causes many medical issues. Basically, it is a heavy metal, and exposure to it causes numerous health problems for people.”

The discrepancy in reported mercury levels has raised serious questions about the accuracy of monitoring and the potential health risks posed by residual toxic metals from the UCC waste burning process. The High Court is expected to seek clarifications from the government in the coming sessions.
https://www.freepressjournal.in/bhopal/bhopal-news-mercury-in-union-carbide-corporation-chemical-waste-vast-gap-in-numbers-in-govt-affidavit-cpcb-report