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Podcasts›Earth's physical resources: rocks for roads - for iPod/iPhone›Longterm sustainability of quarries

Longterm sustainability of quarries artwork

Education

Longterm sustainability of quarries

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

Jun 23, 200900:04:35Education

A look at the road laying process. The need to supply locally, use natural road products and protect the environment around quarries.

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