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Transcript -- How a quarry works artwork
Education

Transcript -- How a quarry works

Earth's physical resources: rocks for roads - for iPad/Mac/PC

Jun 23, 2009Education

Transcript -- 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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How a quarry works

Jun 23, 2009 - 00:07:39

Quarry managers explain how rock is formed and how they extract different layers of stone. Once blasted a...