Qatari Emir Sheikh Hamad Bin Khalifa Al Thani appointed today Abdullah bin Hamad Al-Attiyah as Chairman of the Emiri Diwan, the Qatari News Agency "QNA" reported. The Emir also endorsed the appointment of Dr Mohammad Saleh Al Sada as Al-Attiyah's successor in the Ministry of Energy and Industry. QNA said Al-Attiyah will retain his duties as Deputy Prime Minister.