The National Green Tribunal (NGT) has asked five more stone crushers in Haldwani and Lalkuan to stop operation for not following green norms and causing health hazards.The country’s apex environment watchdog had already ordered Himalaya Stone Crusher at Fatta Bangar area to stop operation. Nainital district magistrate Vinod Kumar Suman said the stone crushers would have to follow norms otherwise they have to shut operations.“We will ensure that the NGT orders are complied with and the people do not face any pollution related hazards.” Most of the stone crushers asked to shut work are located in residential areas.People, who live close to the stone crushers, have complained of deposition of dust on crops and homes resulting in damage of crops and homes. GS Bhandari, a local resident, said there were continuous vibrations from machines that lead to vibration of their homes that could lead to danger to structure in the long run.“The tiny dust particles released from stone crushers dust affect health and cause various diseases,” he said. Bhuvnesh Aggarwal, owner of Himalaya Stone Crusher, said allegations of the residents were not justified. “Our stone crusher has been checked thrice this year for dust pollution and it has been found that we have not crossed the prescribed limit.”Besides these six, 22 stone crushers are operating in Haldwani and Nainital.