Bauxite - Mining & Drilling :
It is usually strip mined (Surface Mining) because it is almost always found near the surface of the terrain, with little or no overburden. Developmental drilling entails demarcation of the mining area by drilling cores and then defining the position of the ore body. Samples of the bauxite are collected from a series of holes drilled by an air-core drilling rig to an average depth of 3.5 meters, 75 meters apart in a grid formation. The samples are analysed for the amount of alumina, silica, and iron oxide to delineate the extraction zones.
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Bauxite - Mining & Drilling :
It is usually strip mined (Surface Mining) because it is almost always found near the surface of the terrain, with little or no overburden. Developmental drilling entails demarcation of the mining area by drilling cores and then defining the position of the ore body. Samples of the bauxite are collected from a series of holes drilled by an air-core drilling rig to an average depth of 3.5 meters, 75 meters apart in a grid formation. The samples are analysed for the amount of alumina, silica, and iron oxide to delineate the extraction zones.
