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Process of surface mining which involves digging and sifting through mud, sand and gravel using shovels and sieves. Alluvial deposits refer to sediment which is transported and deposited by water. It is found in rivers, lakes and the ocean, which can transport and concentrate valuable minerals, ...
Surface mining method which utilizes a sloping wooden trough or a ditch cut in hard gravel or rock as a channel, along which gold-bearing sediment is carried by a stream of water. Bars placed transversally along the bottom cause the water to eddy into small basins, so that the ore may settle and be ...
Also called shaft mining or shaft sinking. Process of digging a deep, vertical or sloping tunnel to find ore, or for ventilation of underground excavations. It is the type of mining seen in movies, where a miner travels straight down into a deep, dark tunnel, until he reaches the bottom to extract ...
Process by which metallic deposits composed of veins are explored by making deep holes on hard rock through superficial deposits, and then moving from one hole to another, across the direction of the vein, in order to cover all veins between two holes. Source: Infomine, Mining Dictionary.
Underground mining method whereby a main vertical shaft is dug into the rock, and tunnels are subsequently driven from the main shaft. The ore, obtained by blasting, is then transported to the surface. Source: Infomine, Mining Dictionary.
Specialized open-pit mining technique whereby solid rock with a high degree of consolidation and density is extracted from localized deposits. Quarried materials are either crushed and broken to produce aggregate or building stone, such as dolomite and limestone, or combined with other chemicals to ...
Underground mining technique consisting of excavating the ore in horizontal slices, starting from a bottom undercut, advancing upward. The ore is drilled or blasted, the mud is removed, and the empty space is filled with sand, aggregate or waste rock. Source: Infomine, Mining Dictionary.
Cribbing or box crib is an underground mining technique whereby a temporary box made of blocks of wood or plastic, 4x4 or 6x6 inches long is used to support the roof of a mine. A box is built arranging sets of blocks to form a square or a rectangle. Source: Infomine, Mining Dictionary.
