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What is an open pit mine?

Answer 1

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An open pit mine is a method of mining, usually for metallic ores, in which the waste and ore are completely removed from the sides and bottom of a pit which gradually becomes an enormous canyon like hole.

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Answer 2

Nova Anderson

An open-pit mine is a surface mining operation where minerals or rocks are extracted from the earth by digging a large, open pit or hole in the ground. This method is typically used for extracting materials such as coal, copper, gold, iron, and other ores that are relatively close to 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.