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Underground mining technique employed when there are gem bearing rocks, as an outcrop, close to the surface. A tunnel is dug from the surface, by blasting or using pick axes, to remove the individual gems. Source: Infomine, Mining Dictionary.
Mining technique used to extract water soluble mineral components, from underground deposits by pumping water down wells and removing the solution created. It is a form of chemical mining. Source: Infomine, Mining Dictionary.
Surface mining technique whereby the ore bearing rocks are exposed by creating horizontal terraces in circular step formations by means of blasting and digging. The debris is then washed to obtain the ore. Mining of gems, such as emeralds is a good example of terrace mining. Source: Infomine, ...
Underground mining technique whereby the ore is removed from selected areas called rooms. Pillars of ore are left at regular intervals between rooms to support the roof of the mine. It is a process used in coal and metal mining. Source: Infomine, Mining Dictionary.
Underground method of mining flat-bed deposits using mechanical shears to cut minerals away, while hydraulic powered supports hold up the roof of the mine. A full-extraction method for mining large panels of coal. Source: Infomine, Mining Dictionary.
Underground mass mining technique which allows the bulk mining of large, lower grade ore, where the mineral ores are extracted by collapsing mineral deposits under their own weight, depending largely on the action of gravity. By removing a thin horizontal layer at the mining level of the ore ...
Technique used when the ore is close to the surface but has various layers of rock and soil on top of it. After the layers are removed, the mineral bed is blasted, breaking it up to expose the ore. It is generally used to extract coal. Source: Infomine, Mining Dictionary.
Underground mining technique which entails digging into igneous and metamorphic rocks to locate hard minerals, generally those containing metals or gems, using picks, shovels, drills and blasting. Source: Infomine, Mining Dictionary.
