Types of Coal Mining - FEECO International, Inc.
Mining Industry Engineering Insurance exposure IMIA Conference, Istanbul 2009 . This paper describes the various types and activities of the mining industry and also the . accessing and extracting the mineral or coal by either open cast or underground extraction. Underground mining requires shafts, tunnels, roads and working galleries .Open-pit, open-cast or open cut mining is a surface mining technique of extracting rock or . or the mineral occurs as veins in hard rock—underground mining methods are used to extract the valued material. . This depends on how weathered the rocks are (eroded rocks), and the type of rock, and also how many structural.