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

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

Longterm sustainability of quarries

Longterm sustainability of quarries | CastVibes

Transcript -- How a quarry works

Rocks for Roads

Transcript -- An an introduction to this album

Transcript -- Rocks for Roads

How a quarry works

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.