Order of the National Green Tribunal in the matter of M/s A.G. Stone Crushing Co. Ltd. Vs. U.P. Pollution Control Board & Others dated 24/09/2018. The case relates to the location of the stone crusher of A.G. Stone Crushing on the river bed of Yamuna. National Green Tribunal while dismissing the Application clearly stated that stone crushers cannot be permitted to operate on the river bed/flood plains.