Collections in 2023: All About Metallurgy (in Honor of Dr. Patrick Taylor), Underground Ventilation, Ground Control in Mining, Geometallurgy, Application of AI and Machine Learning in Mining. Upcoming Collections in 2024: Critical Minerals and Battery Materials, Hydrometallurgy, Intelligent Mining, Energy Metal Systems of the Colorado Plateau Mining, Metallurgy & Exploration is the flagship journal of the Society for Mining, Metallurgy & Exploration Inc. (SME), an international society of some 15,000 members worldwide consisting of professionals in the mining and minerals industry, including engineers, geologists, metallurgists, educators, students and researchers. It provides a broad-based forum for the exchange of real-world and theoretical knowledge from academia, government and industry that is pertinent to mining, mineral/metallurgical processing, exploration and other fields covered by the Society. MME’s readers and contributors include all of the Society’s members, who span a wide spectrum of researchers, department heads, practitioners, managers and executives from academic institutions, government bodies and companies around the world, and other professionals working or researching in the mining, minerals and exploration fields. One of the ways the journal is unique is that it is able to provide a balanced insight into these fields as well as an avenue for cross-linkings among the fields. Articles published in MME have widespread exposure to all levels of practitioners and researchers. Started in 1984 under the name of Mineral & Metallurgical Processing, this SME journal has more than three decades of history, consistently fulfilling a unique role in the global mining and mineral industry as a forum in which industry, university and government research and results are given equal weight. In 2019, it will feature three special issues: (1) Special Issue in Honor of Professor Douglas W. Fuerstenau’s 90th Birthday (Prof. Fuerstenau is a giant in mineral processing), (2) Special Issue on Emerging Technology, or the Fourth Industrial Revolution in Mining, and (3) Special Issue on Critical Minerals. The journal publishes high-quality original research publications, in-depth special review articles, reviews of state-of-the-art and innovative technologies and industry methodologies, communications of work of topical and emerging interest, and other works that enhance understanding on both the fundamental and practical levels. Topics covered include blasting, coal, data science, emerging technologies, environmental stewardship, equipment, geology, geomechanics/geotechnologies, health and safety, hydrometallurgy, industrial minerals, industrial processes such as comminution and flotation, rock/fracture mechanics, mine design/planning, mineral economics/resources, mineral processing, project management/finance, optimization, plant design, reclamation, sensing/geophysics, separation/purification of minerals and metals, simulation/modeling, social issues/law/policy, tailings, underground construction and tunneling, ventilation, and water management.