Union minister Bhupender Yadav orders sealing of 191 polluting industries, sets Dec 31 deadline for Delhi border free-flow systems and Nov 30 for ANPR cameras. NCR, the Centre has directed the immediate sealing of 191 industrial units that failed to install air pollution control equipment despite repeated instructions, while seeking greater. Union Environment Minister Bhupender Yadav reviewed air pollution measures in Delhi-NCR, stressing strict ground-level enforcement, real-time monitoring, and.