![Earth's physical resources: rocks for roads - for iPad/Mac/PC artwork](https://is2-ssl.mzstatic.com/image/thumb/Podcasts6/v4/02/de/f3/02def3f6-c20e-f7f7-c0f7-a97327c085e3/mza_1415165156329681052.jpg/100x100bb.jpg)
Transcript -- Longterm sustainability of quarries
Earth's physical resources: rocks for roads - for iPad/Mac/PC
English - June 23, 2009 02:35 - 27.2 KB application/pdfCourses Education nature street transport conservation recycle tonne concrete agriculture steel export Homepage Download Apple Podcasts Google Podcasts Overcast Castro Pocket Casts RSS feed
Next Episode: Longterm sustainability of quarries
Transcript -- A look at the road laying process. The need to supply locally, use natural road products and protect the environment around quarries.