Earth's physical resources: rocks for roads - for iPod/iPhone
The Open University
Transcript -- How a quarry works
JUN 23, 2009
-1 MIN
Transcript -- How a quarry works
JUN 23, 2009
-1 MIN
Play Episode
Description
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.