India, May 3 -- In yet another action against rising air pollution, the Pimpri Chinchwad Municipal Corporation (PCMC) sealed four ready-mix concrete (RMC) plants during a special inspection drive, officials said on Saturday.

The action was taken on Thursday as part of an ongoing drive by the civic body's environment engineering department.

During the latest drive, officials inspected 10 RMC plants in areas such as Punawale, Moshi and Pimple Saudagar. Four units violated key norms, including failure to implement dust control measures, poor housekeeping, and storing raw materials in the open-all contributing to air pollution.

The sealed units include Pharande RMC plant in Moshi, Yash RMC plant in Chinchwad, Ram Group Crystal One RMC plan...