Coal Mining
Coal Mining
Coal Mining: In the 1850s, the British started building railway lines in India. The steam engines that pulled the trains were powered by coal. Coal was also needed by the iron and steel industry. As the need for coal grew, coal mines were opened in Bengal, Odisha and Bihar, which had rich seams of coal.
Compared to wood fuels, coal yields a higher amount of energy per mass and can often be obtained in areas where wood is not readily available. Though it was used historically as a domestic fuel, coal is now used mostly in industry, especially in smelting and alloy production, as well as electricity generation.
Large-scale coal mining developed during the industrial revolution, and coal provided the main source of primary energy for industry and transportation in industrial areas from the 18th century to the 1950s. Coal remains an important energy source. Coal is also mined today on a large scale by open pit methods wherever the coal strata strike the surface or are relatively shallow. Britain developed the main techniques of underground coal mining from the late 18th century onward, with further progress being driven by 19th century and early 20th-century progress.However, oil and gas were increasingly used as alternatives from the 1860s onward.
By the late 20th century, coal was, for the most part, replaced in domestic as well as industrial and transportation usage by oil, natural gas,or electricity produced from oil, gas, nuclear energy or renewable energy sources. By 2010, coal produced over a fourth of the world's energy.
Since 1890, coal mining has also been a political and social issue. Coal miners' labour and trade unions became powerful in many countries in the 20th century, and often, the miners were leaders of the left or Socialist movements (as in Britain, Germany, Poland, Japan, Chile, Canada and the U.S.) Since 1970, environmental issue have been increasingly important, including the health of miners, destruction of the landscape from strip mines and mountain top removal, air pollution, and coal combustion's contribution to global warming.
Students / Parents Reviews [10]
My experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
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Barkha Arora
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Cheshta
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Shivam Rana
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Prisha Gupta
8thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
