The book contains articles describing one of the rare materials - molybdenum. Deposits and use of molybdenum. Production of molybdenum. Physical properties of molybdenum. Molybdenum production technology. Mechanical properties of molybdenum. Mechanical properties of molybdenum alloys. Molybdenum alloys. Oxidation of molybdenum and its protection. Welding, soldering and mechanical methods of bonding molybdenum.