Responses
Most of them can be extracted without requiring drilling.
Most of them can be extracted without requiring drilling.
Most of them can be extracted using the placer method.
Most of them can be extracted using the placer method.
They are usually found very close to Earth’s surface—less than 1,000 ft underground.
They are usually found very close to Earth’s surface—less than 1,000 ft underground.
They are usually found deep below Earth’s surface—more than 1,000 ft underground
1 answer
The statement that is true about most higher-grade metallic ores is:
They are usually found deep below Earth’s surface—more than 1,000 ft underground.
Higher-grade metallic ores often require deeper mining techniques, as they are typically located in deposits that are not easily accessible from the surface.
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103 answers
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