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.
Meanwhile, vast quantities of cement will be shipped in by lorry to make concrete for HS2’s tunnels at great environmental cost. The manufacture of cement produces 8% of the world’s carbon emissions, and the industry would be the world’s third biggest emitter after China and the US if it were a