Q:

What are the main disadvantages of coal mining?

A:

Quick Answer

The main disadvantage of coal mining is that it is very hazardous to the health of the people involved in mining, while also having serious negative effects on the environment. Another disadvantage of coal mining is that it is a nonrenewable energy source that will eventually run out, which means that it cannot be depended on as a permanent source of energy.

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Full Answer

Thousand of miners die each year as a result of mines collapsing, explosions and a respiratory illness referred to as "black lung". Coal mining often causes flooding and erosion that leads to the destruction of ecosystems vital to humans and animals. Toxins and chemicals from coal mining are often released into the soil, air and water, which hinders the environment further along with the animals and people living in it.

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Related Questions

  • Q:

    How does coal mining affect the environment?

    A:

    Coal mining affects the environment in several ways: underground coal mining introduces toxins such as methane gas into waterways and the atmosphere, and surface coal mining contributes to deforestation and erosion. Coal mining displaces large amounts of water, which in turn alters local water tables. This change affects organisms in surrounding ecosystems, changing the flow rate and volume of water in streams and lakesand impacting the health and growth rates of fish, plants and aquatic species.

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  • Q:

    What are the disadvantages of opencast mining?

    A:

    Opencast mining, also known as surface mining or strip mining, has disadvantages that include disturbance of the environment and local ecosystems, exposure of radioactive elements and contamination of freshwater sources. The use of heavy machinery and blasting techniques also create environmental pollution.

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  • Q:

    How is coal extracted?

    A:

    The two main methods used for coal extraction are surface mining and underground mining. The methods used to extract coal depend on the geology of the coal deposits. According to Energy Trends Insider, the amount of coal produced by one miner in one hour has more than tripled since 1978 because of improvements in mining technology and the growth in surface mining.

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  • Q:

    How hot does coal burn?

    A:

    Coal can burn at temperatures greater than 3500 degrees F. Since burning is a chemical reaction that is dependent on the presence of oxygen, the more air there is, the higher the possible temperature that coal can reach. Inside a crucible coal can reach a temperature of 3500 degrees F.

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