Crown Prince Sultan Ibn Abdulaziz Al Saud, Deputy Premier and Minister of Defense and Aviation and Inspector General has expressed his thanks to the Minister of Petroleum and Mineral Resources Ali bin Ibrahim Al-Naimi after reviewing his letter attached by a copy of The Pictorial Guide of Mineral Activities in the Kingdom of Saudi Arabia. The Crown Prince said, "We thank you for your sincere efforts, wishing you all success and progress." It is worth mentioning that the guide includes a summary on 30 mineral ores.