Prince Khalid bin Bandar bin Abdulaziz, Governor of Riyadh Region, patronized here yesterday evening the graduation ceremony of a batch of trainees of technical colleges and industrial institutes, and the first batch of College for Preparation of Technical Trainers. Addressing the ceremony, the Prince said that the Custodian of the Two Holy Mosques King Abdullah bin Abdulaziz Al Saud and the Crown Prince always direct to provide all means and ways to qualify citizens to be a major factor in the homeland's progress and prosperity.