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Podcasts›Earth's physical resources: rocks for roads - for iPod/iPhone›How a quarry works

How a quarry works artwork

Education

How a quarry works

Earth's physical resources: rocks for roads - for iPod/iPhone

Jun 23, 200900:07:39Education

Quarry managers explain how rock is formed and how they extract different layers of stone. Once blasted and processed, it is used to build roads.

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