Answer :

Strip mining is a surface mining method removing soil and rock to access near-surface minerals with significant land disturbance, while subsurface mining involves accessing deeper deposits through tunnels or shafts and generally has less surface impact but different underground risks.

The primary differences between strip mining and subsurface mining involve the techniques and the environmental impacts associated with each method. Strip mining is used for extracting materials near the earth's surface and involves removing large amounts of soil and rock to access the desired minerals. This method includes area strip mining, used in flat terrains; contour strip mining, used in hilly or mountainous areas; and mountaintop removal, which involves blasting the entire mountaintop. On the other hand, subsurface or underground mining accesses deeper mineral deposits through shafts or tunnels, such as in drift mines, slope mines, and shaft mines, where miners use elevators and trains to reach coal seams. The environmental impacts of strip mining are greater due to the extensive land disturbance, whereas subsurface mining affects less surface area but can pose different risks and challenges such as cave-ins and airflow management.

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Rewritten by : Barada

The main differences between strip mining and subsurface mining: involve the location and methods used for extracting the minerals.

Strip mining, also known as surface mining or open-pit mining, is a method used to extract minerals located close to the Earth's surface. In this process, the layers of soil and rock covering the deposit are removed by large excavation equipment, such as bulldozers and draglines.

This method is generally more cost-effective and requires fewer resources compared to subsurface mining. However, strip mining can lead to significant environmental impacts, including deforestation, habitat destruction, and soil erosion.

On the other hand, subsurface mining involves the extraction of minerals from deep underground deposits. This method is employed when the desired resource is located too deep for strip mining. There are different techniques for subsurface mining, such as room-and-pillar mining, cut-and-fill mining, and longwall mining, which use specialized equipment to create tunnels and access the resources.

Subsurface mining is typically more expensive and labor-intensive than strip mining. While it has less immediate impact on the environment, it can cause ground subsidence, the release of toxic gases, and potential harm to groundwater supplies.

In summary, strip mining extracts minerals close to the Earth's surface by removing layers of soil and rock, while subsurface mining targets deep underground deposits through the creation of tunnels and underground chambers. Each method has its own environmental and economic implications.

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