Mining allows humans to use these resources. Some mining practices are controversial. Mountaintopremoval mining, for example, allows mining companies to extract a significant amount of coal at a far lower cost, but its destructiveness has led to protections for the environment. Traditional forms of mining can be unsafe for workers.
Materials such as coal and tar sand are located relatively near the surface of the earth. The method to recover such materials is called strip mining, a form of surface mining where surface vegetation, soil and rocks are removed in strips and often times together with controlled explosions in order to make the removal process more efficient.
May 15, 2014· The Advantages of Coal. Low Cost – This is the most affordable form and source of energy. China and India are some of the countries that offer coal at a very affordable price. Abundance – Coal is everywhere. In this case, you can easily found it in different parts of the world.
Coal benefits all Australians through its contribution to exports, wages, investment and tax revenue. It is Australia's comparative advantage in coal – together with iron ore – that has helped to sustain the longest period of continuous economic growth in the nation's history.
(For a figure showing how coal mining employment has declined, see The Regional Economist article "Coal's Future Looks Uncertain as Rival Fuels Grow.") At the same time, the authors said, labor productivity in coal production has increased steadily for over three decades, as firms have moved toward complete automation of the mining ...
The nation stood as the largest producer of coal in the world, but history also remembers a darker side to the story. Steam shovels, tractors and equipment used in coal mining eroded the soil while railroads, industrial plants and homes polluted cities across the country.
Mining is the practice of extracting ore, coal, clays, soils, or minerals from the ground for the purpose of using them. Mines have existed for thousands of years. In ancient times mines consisted of short tunnels dug into the sides of hills or mountains where veins of metals, minerals, or coal .
But demand for metals, crystals, coal, and other minable substances is only increasing. Another benefit of mining is that it spurs technological development. We can use some of the safety technologies developed for mining in other industries, such as constructing deep underground subway tunnels, water pipes,...
Materials acquired through mining include metals, limestone, rock salt, gemstone, coal, oil, gravel, gold and clay. Mining is intended to obtain resources that cannot be produced through agricultural activities or manufactured artificially in a laboratory or factory.
Mountaintop removal also helps mining firms obtain coal from locations that would have been inaccessible if underground mining techniques were used. 3. It helps fulfill demands for energy. With more and more people using electronic gadgets and appliances, the .
