KHANEWAL   -   District administration sealed 20 brick kilns and got registered cases against owners of 14 kilns during a week’s long campaign. According to official sources, the government had imposed ban on the kilns, operational sans zigzag technology, as these were emitting immense smoke and causing smog in atmosphere. Assistant Director Environment Department Engineer Sarfraz Anjum, the kilns would remain close by December 31. He, however, added that the kilns with zigzag technology could remain operational. He informed that crackdown was being done on daily basis. Nobody would be allowed to pollute atmosphere.