What is true about most higher-grade metallic ores?
answer from the options below
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.
Most of them can be extracted without requiring drilling.
They are usually found deep below Earth’s surface—more than 1,000 ft underground.
1 answer
They are usually found deep below Earth’s surface—more than 1,000 ft underground.
1 answer