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Landscape Issues Of Open Pit Mining. a major part of iron ore, nonferrous metals, brown coal, building materials and minerals for industry is being excavated in opencast mineshis type of mining has a deep impact on the natural stratapencast mining changes geological, hydrological and geotechnical conditionst influences the existing ecological system and landscape.
Although opencast mining is the most economic and safest method of exploiting reserves of coal and minerals which lie just below the surface, it presents serious disadvantages. Large earthmoving equipment strips the overburden and stacks it in a bank parallel with the cut and the uncovered ore is then fragmented, loaded and transported from the pit.
This type of mining is particularly damaging to the environment because strategic minerals are often only available in small concentrations, which increases the amount of ore needed to be mined. Environmental hazards are present during every step of the openpit mining process. Hardrock mining exposes rock that has lain unexposed for geological eras.
What Is The Environmental Impact Of The Mining Industry
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The influence of the open cast mining is more directly perceivable. Natural landscapes, soil cover, plant cover, and surface waters have been destroyed, other mineral resources ( sand and peat) have been damaged. Also, several old villages have perished.
Openpit mining clears the vegetation covering the deposits, exposing the soil and permanently changing the landscape and land use, said Dr. Da#241;o, who was then the assistant director of the Ecosystems Research and Development Bureau (ERDB) of the Department of Environment and Natural Resources (DENR).
Open mining of gold disturbs the water level of the area around the pit because the water in the area of the pit is emptied, and water is extracted and the area is dried to perform the operation. Cyanide is very harmful for the fishes in the water. Open mines are easily
Because of the destruction to the natural landscape several countries have banned open pit mining entirely. Open pit mining directly alters the geomorphology of the immediate area in which it is...
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Due to its nature, especially opencast mining inevitably leads to serious degradation on ecological and aesthetic values of the landscape. Topography and drainage, air, soil and water quality, vegetation including forest ecosystems, noise levels and ground vibrations, human health and habitation can be listed as the typical parameters that are mainly affected by opencast mining activities.
In case of open cast mining there will be complete loss of agricultural land and deforestation in and around the pit. Underground mining uses limited surface land for the entry system and infrastructure development. In either situation, adequate compensation is provided to the landowners by cash, employment and rehabilitation.
Loss of a landscape that has meaning for people as a result of open pit mining and the resulting environmental degradation causes mental anguish and suffering that is largely or even entirely discounted or denied by mine operators but is nevertheless real.
Large, lowgrade ore deposits are usually economically attractive because it permits high recovery of the resource and allows sufficient space for large and efficient mining equipment. An open pit mine could recover almost 90% of the oil shale in a very thick deposit [17]. It is said that strip mining could provide an even higher recovery.
To improve landuse management of open pit mining enterprises, the characteristics of transportless technological schemes for several coal seams strata surface mining are highlighted and observed.
#0183;#32;disturbance of native fauna and flora, modification of surface and ground water balance, resettlement of residential areas, roads and railways, release of air, liquid and solid pollutants and noise pollution. Water resources and the quality of air are seriously modified by surface mining operations.
mining methods are often considered as more economical. The most common surface mining methods such as strip mining, open pit mining, opencast mining and quarrying start from the earths surface and keep exposure to the surface during the extraction period. Disruption of the surface significantly affects the soil, fauna, flora and surface
The former mining areas are not suitable for building construction. The influence of the open cast mining is more directly perceivable. Natural landscapes, soil cover, plant cover, and surface waters have been destroyed, other mineral resources ( sand and peat) have been damaged. Also, several old villages have perished.
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