A mobile court here fined a brickfield Tk 30,000 on charge of polluting environment by using firewood at Bardal in Assassuni upazila yesterday. Locals said, acting on a tip-off, the mobile court led by executive magistrate Md Sadequr Rahman and aided by a Rab-6 team raided Messrs UMB bricks owned by Bardal Union Parishad (UP) chairman Yunus Ali Sana at Bardal.