Between strip and shaft mining, which is less harmful to the environment? And which is less harmful to the miners?

Answer 1

Shaft mining is less harmful to the environment.

While digging up all the soil and rock across a large area of the earth's surface is extremely harmful to the environment, shaft mining only affects a very small area (the mine's opening).

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Answer 2

Vivian Ahern

Shaft mining is generally less harmful to the environment than strip mining. It involves digging vertical tunnels to access mineral deposits, causing less surface disturbance. However, shaft mining can pose higher risks to miners due to potential cave-ins and other safety hazards compared to strip mining, where the work is mostly done on the surface.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.