Search results
Results from the WOW.Com Content Network
Mining is the extraction of valuable geological materials and minerals from the surface of the Earth. Mining is required to obtain most materials that cannot be grown through agricultural processes, or feasibly created artificially in a laboratory or factory.
Surface gold mine with haul truck in foreground, in Kalgoorlie, Australia. Mining engineering is the extraction of minerals from the ground. It is associated with many other disciplines, such as mineral processing, exploration, excavation, geology, metallurgy, geotechnical engineering and surveying.
high grade ores are rich in the mineral desired, low-grade ores have less of the mineral desired; Gangue, minerals within the ore that are not desired; these are removed during ore processing; Vein (geology) a geological formation that often contains ore; Overburden, the material on top of a given mineral deposit (in surface mining, it has to ...
Mineral processing is the process of separating commercially valuable minerals from their ores in the field of extractive metallurgy. [1] Depending on the processes ...
The geological definition of mineral normally excludes compounds that occur only in living ... Na 3 AlF 6, is a key mineral in the extraction of aluminium from ...
Mining is the extraction of valuable minerals or other geological materials from the earth, from an ore body, vein or seam. [35] The term also includes the removal of soil. Materials recovered by mining include base metals , precious metals , iron , uranium , coal , diamonds , limestone , oil shale , rock salt , potash , construction aggregate ...
In contrast, deeper mineral deposits can be reached using underground mining. [2] Kittilä Gold Mine in Kittilä, Finland is the largest primary gold producer in Europe. [3] [4] Open-pit mining is considered one of the most dangerous sectors in the industrial world.
Resource extraction involves any activity that withdraws resources from nature. This can range in scale from the traditional use of preindustrial societies to global industry. Extractive industries are, along with agriculture, the basis of the primary sector of the economy. Extraction produces raw material, which is then processed to add value.