This Journal is published periodically two times annually : April and October, containing papers of research and development for mineral and coal, including Mining Exploration, Surface Mine System and Operation, Underground Mine System and Operation, Geotechnical, Mine Safety and Mine Environment, Mine Management, Mine Ventilation, Mineral and Coal Economics, Coal and Mineral Processing and Smelting, Metallurgy, Coal and Mineral Trading, Mining Law and Policy, Mining CSR and Community Development, and Technology and Innovation in Mining. The editors only accept relevant papers with the substance of this publication.