Bangladesh Oil, Gas & Mineral Corporation (Petrobangla)`s Chairman Mr. A B M Abdul Fattah placed a floral wreath at the portrait of Father of the Nation Bangabandhu Sheikh Mujibur Rahman commemorating the 45th National Mourning anniversary at the premises of Gas Transmission Company Limited a company of Petrobangla at Agargaon in the capital on Saturday. Directors, officials and employees were present on the occasion.