Chandigarh, January 20 As many as 277 stone crushers in Charkhi Dadri had been fined Rs 31.45 crore for illegal groundwater extraction while a Rs 4.89 crore penalty had been slapped on 33 for violating other norms, a panel constituted to look into the irregularities has told the National Green Tribunal. Formed following directions from the NGT on August 19, 2020, the seven-member committee submitted the details before the tribunal on January 13. The panel comprised Haryana State Pollution Control Board (HSPCB) Member Secretary S Narayanan, State Environment Impact Assessment Authority Member Secretary Shekhar Vidyarthi, Charkhi Dadri ADC Rahul Narwal and Divisional Forest Officer Bhupender Raghav and three scientists from the Central Pollution Control Board.