Mechanochemical transformations are the subject of increasing attention in solid state chemistry, physics and materials science as well as in development of advanced technologies. They have been discussed at a number of symposia on mechanochemistry and mechanical alloying in various countries. The International Mechanochemical Association organised the 1st International Conference on Mechanochemistry (InCoMe'93) held on March 23-26, 1993 in Kosice, Slovak Republic. More than 100 contributions from 17 countries were presented. The proceedings consist of two volumes: Vol 1 - Fundamentals and models of mechanically stimulated processes; Mechanically induced changes in the structure and properties; Vol 2 - Mechanochemical reactions and mechanical alloying; Technological aspects of ultrafine grinding and mechanical activation. The lectures included: Mechanochemical activation of solids (V V Boldyrev, Russia), Surface Mechanochemistry of Crystalline Solids (E Gutman, Israel), Mechanochemical Effects of Ultrasound (K S Suslick, USA), Mechanical Alloying in Materials Science (E Ivanov, USA), Mechanochemical Activation of Solid Particles Through Fine Grinding (I J Lin, Israe), Mechanical Activation of Solid Surfaces with Well Defined Stress Conditions (M Senna, Japan), Role of Mechanical Activation in Preparation of Catalysts (U Steinike, Germany), Nonequilibrium Phase Transformations of Intermetallic Compounds by Ball Milling (H Bakker, Holland), Correlations Between Energy Transfer and End Products in Mechanical Alloying (M Magini, Italy), Mechano-electrochemistry and Corrosion of Metals (V Gutman, Austria), Analogue Mathematical Description of Mechanical Activation (K Tkacova, Slovakia),Mechanism of Mechanochemical Synthesis in Oxide Systems (G R Karagedov, Russia), Mechanical Alloying of Iron and Boron Powders (V A Barinov, Russia), Effect of Mechanical Activation on Dissociation of Magnesite (V Jesenak, Slovakia), etc.