<http://schema.org/description>
"Civil engineering researchers at Purdue University are trying to perfect the usage of recycled concrete.  Recycling concrete could help reduce construction costs by 20%, and cut down on resources such as limestone, from being quarried."^^<http://www.w3.org/2001/XMLSchema#string>
<http://inhabitat.com/using-recycled-concrete-could-reduce-road-paving-costs-by-10-20/>