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Mining, Exploration: Geological search to discover mineral resources so we…
Mining
Geophysics is the physics of the earth that is then used to direct exploration to an area of interest.
Magnetic survey, Gravity survey, Seismic Survey
Magnetic Survey: Conducted on land or in air for strongly magnetic minerals to id a target area for exploration
Gravity Survey: Rocks types have different densities and so identifying gravitational anomalies indicates changes in rock types below the surface.
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Seismic Survey: Provide a source of shock wave via Truck or explosive charge and then capture the waves reflected back to surface with geophones to produce a picture of rock layers through analysis.
Mining Methods
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Placer Mining: Used to sift out valuable minerals from sediments in river channels, beach sands.
Dredging: Underwater extraction of placer deposits by floating equipment that uses hydraulic or mechanical systems
what is mining?
If its not mined, it must be grown. Mining and agriculture are primary industries which have contributed to the development of modern civilization.
Mining is the extraction of minerals of economic value from the earth's crust for the benefit of humankind.
Mining engineering: The practice of applying math, science and technology to solve problems that have economic importance.
Mineral resource is an occurrence of solid material of economic interest in or on the Earth's crust with a certain grade and quantity that there a prospects for future economic extraction.
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Impact on society
Positive: Development of areas.
Providing employment.
Earning foreign currency the exports
Providing raw materials for other industries and to generate electricity.
Negative: deforestation. Water pollution through Acid Mine Drainage.
Air pollution from noxious fumes
Ground subsidence
Health and safety of animals and humans
Water pollution can be mitigated by applying water and environmental management knowledge from civil engineering and products of minerals knowledge from chemical metallurgical engineering.
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Exploration: Geological search to discover mineral resources so we can create new mines or extend existing mines.
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Collect and assess rock samples. Higher concentrations than average in the area are called anomalies.