I’ve spoken about the theory behind “cradle to cradle” manufacturing before, and now here’s an Irish company doing it in practice. Gannon Eco takes industrial waste and turns it into a new product e.g. glass is ground down into fine sand with diverse uses like industrial water filtration or greyhound racing track surfaces.
Here’s a graphic from the company’s website which illustrates the four stages in the transformation of “ceramic media” (previously used in the process of manufacturing orthopaedic implants) into another useful product, in this case a concrete road barrier.
Source: http://www.gannoneco.ie/services1.html (Accessed 2015, July 06)
The company’s website is http://www.gannoneco.ie and the “Services” page gives a good, practical illustration of how cradle to cradle manufacturing really works.