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The Guardian - UK
The Guardian - UK
National
Roger Harrabin

How HS2 waste clay could be conjured into concrete to cut emissions

A tunnel boring machine at the HS2 site near Old Oak Common in west London.
A tunnel boring machine at the HS2 site near Old Oak Common in west London. Photograph: Jonathan Brady/PA

The recent announcement that HS2 may still extend to Euston station instead of terminating in the suburbs could be good news for a group of scientific alchemists planning to conjure concrete from London clay.

The boring for HS2 will produce more than a million tonnes of waste overall, and that clay will need to be carted away on the surface.

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